Basics and Printing

138. Basic Arrays 0 - Link

Task
Answer

Create an array that can hold ten integers. Fill up each slot of the array with the number -113. Then display the contents of the array on the screen.Do not use a loop. Also, do not use any variable for the index; you must use literal numbers to refer to each slot.Sample Output

Slot 0 contains a -113
Slot 1 contains a -113
Slot 2 contains a -113
Slot 3 contains a -113
Slot 4 contains a -113
Slot 5 contains a -113
Slot 6 contains a -113
Slot 7 contains a -113
Slot 8 contains a -113
Slot 9 contains a -113

BasicArrays0.java

public class BasicArrays0 {
    public static void main(String[] args) {
        int[] arr = new int[10];
        arr[0] = -113;
        arr[1] = -113;
        arr[2] = -113;
        arr[3] = -113;
        arr[4] = -113;
        arr[5] = -113;
        arr[6] = -113;
        arr[7] = -113;
        arr[8] = -113;
        arr[9] = -113;

        System.out.println("Slot 0 contains a " + arr[0]);
        System.out.println("Slot 1 contains a " + arr[1]);
        System.out.println("Slot 2 contains a " + arr[2]);
        System.out.println("Slot 3 contains a " + arr[3]);
        System.out.println("Slot 4 contains a " + arr[4]);
        System.out.println("Slot 5 contains a " + arr[5]);
        System.out.println("Slot 6 contains a " + arr[6]);
        System.out.println("Slot 7 contains a " + arr[7]);
        System.out.println("Slot 8 contains a " + arr[8]);
        System.out.println("Slot 9 contains a " + arr[9]);
    }
}

139. Basic Arrays 1 - Link

Task
Answer

Create an array that can hold ten integers. Fill up each slot of the array with the number -113. Then display the contents of the array on the screen.This time, you must use a loop, to put the values in the array and also to display them. Also, in the condition of your loop, you should not count up to a literal number. Instead you should use the length field of your array.Sample Output

Slot 0 contains a -113
Slot 1 contains a -113
Slot 2 contains a -113
Slot 3 contains a -113
Slot 4 contains a -113
Slot 5 contains a -113
Slot 6 contains a -113
Slot 7 contains a -113
Slot 8 contains a -113
Slot 9 contains a -113

BasicArrays1.java

public class BasicArrays1 {
    public static void main(String[] args) {
        int[] arr = new int[10];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = -113;
            System.out.println("Slot " + i + " contains a " + arr[i]);
        }
    }
}

140. Basic Arrays 2 - Link

Task
Answer

Create an array that can hold ten integers. Fill up each slot of the array with a random number from 1 to 100. Then display the contents of the array on the screen. You must use a loop.And, like last time, you must use the length field of your array and not a literal number (like 10) in the condition of the loop.Sample Output

Slot 0 contains a 45
Slot 1 contains a 87
Slot 2 contains a 39
Slot 3 contains a 32
Slot 4 contains a 93
Slot 5 contains a 86
Slot 6 contains a 12
Slot 7 contains a 44
Slot 8 contains a 75
Slot 9 contains a 50

BasicArrays2.java

import java.util.Random;
public class BasicArrays2 {
    public static void main(String[] args) {
        Random r = new Random();
        int[] arr = new int[10];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(100);
            System.out.println("Slot " + i + " contains a " + arr[i]);
        }

    }
}

141. Basic Arrays 3 - Link

Task
Answer

Create an array that can hold 1000 integers. Fill the array with random numbers in the range 10-99. Then display the contents of the array on the screen. You must use a loop.If you’re careful to only pick random numbers from 10 to 99 and you put two spaces after each number, then your output will line up like mine.And if you’ve forgotten how to pick random numbers in a certain range, you can check out my random ranges visualizer.Sample Output

69  34  39  35  19  68  14  93  91  96  90  67  82  15  75  13  34  39  88
70  53  31  52  79  89  97  36  56  33  61  67  98  57  85  90  55  82  94
91  96  73  60  58  56  46  64  71  79  54  40  79  24  68  21  37  55  33
46  95  12  98  12  92  78  94  14  17  16  15  99  36  40  20  69  29  42
50  31  60  65  57  79  53  30  84  28  97  66  23  88  97  18  86  44  79
63  59  97  11  28  57  88  71  89  42  84  28  55  42  13  16  48  58  68
92  53  25  26  25  31  53  91  50  73  80  21  86  87  60  63  59  44  39
25  46  11  14  21  52  97  35  27  56  49  75  13  30  57  20  74  56  39
46  20  62  21  59  87  43  81  24  75  42  79  26  40  19  92  50  57  32
71  10  65  62  98  44  69  60  66  51  72  87  24  82  36  81  69  22  88
73  28  49  74  15  19  44  11  11  73  55  23  73  30  94  85  92  11  53
69  70  17  51  40  57  28  94  93  93  90  64  45  50  90  65  66  15  42
69  48  96  15  11  29  19  90  73  76  33  19  14  37  20  15  69  47  58
81  84  34  84  26  20  49  98  16  71  47  75  18  28  26  25  21  39  42
58  40  10  29  17  55  35  18  59  20  88  49  42  74  65  75  52  41  93
19  82  34  29  71  30  86  91  15  36  85  28  24  43  38  17  76  95  30
48  15  96  47  56  67  70  87  16  42  96  21  20  75  70  68  11  21  50
51  93  56  20  21  89  49  13  33  18  62  72  95  94  62  88  91  26  46
28  70  87  43  30  54  82  54  39  68  54  22  99  61  29  77  19  74  87
44  65  32  73  88  58  23  32  23  62  27  45  84  44  33  60  23  62  64
90  20  49  33  11  48  90  39  49  64  54  21  52  66  61  18  65  97  59
53  18  80  12  67  88  57  73  65  14  82  41  73  22  42  58  69  94  87
35  64  81  34  30  41  16  99  42  74  96  92  47  62  49  31  34  24  99
76  96  15  25  77  49  71  98  60  17  67  86  52  25  17  25  67  17  26
42  40  46  10  36  33  67  15  79  48  69  57  91  29  36  50  71  39  10
55  76  93  80  48  74  85  26  64  93  83  33  30  65  34  96  12  44  43
13  64  59  23  70  87  73  87  12  96  65  83  79  23  92  56  86  39  57
46  62  75  60  12  14  15  82  91  43  85  64  73  79  14  38  46  63  82
49  56  22  64  10  84  67  66  85  78  22  72  53  33  18  43  90  94  61
52  42  95  32  61  92  24  22  23  57  96  27  45  41  97  24  52  74  23
52  94  64  24  47  62  48  46  72  27  50  15  37  10  75  66  53  42  81
12  76  84  43  79  89  75  76  89  93  13  32  85  67  24  97  65  14  62
47  25  62  73  40  71  66  11  81  22  33  22  90  55  39  26  63  14  45
71  68  26  63  71  19  95  95  93  18  17  20  56  28  74  23  85  44  83
99  77  57  97  14  13  54  44  35  27  55  29  58  41  35  26  23  64  53
55  92  10  42  57  73  59  21  92  24  53  65  60  16  26  53  69  49  61
87  34  15  19  85  33  96  16  11  57  11  19  38  86  55  21  12  19  21
69  92  45  90  96  67  33  88  99  68  76  22  60  60  11  42  62  44  23
74  15  92  47  35  83  79  71  86  44  86  68  97  60  66  14  75  45  56
98  11  10  16  38  54  83  51  83  49  62  63  24  68  13  31  13  41  34
35  12  88  12  21  55  93  27  92  27  14  39  58  31  39  25  94  83  88
69  22  71  41  43  34  45  27  26  77  11  39  32  96  78  67  58  54  84
26  96  14  29  92  11  28  68  91  93  74  53  13  84  99  70  11  91  70
55  87  16  57  17  58  13  75  79  65  51  75  33  87  54  22  63  48  45
79  12  40  52  71  62  38  77  36  88  53  94  88  58  20  28  11  48  59
33  52  78  76  38  42  20  80  99  53  64  81  79  16  30  18  46  79  70
83  14  71  99  64  84  94  20  54  74  40  37  22  96  34  83  85  11  99
21  37  80  68  34  17  87  88  53  29  27  42  44  59  37  52  85  64  34
23  35  13  46  14  59  87  42  78  52  89  14  52  37  30  74  22  70  79
80  32  34  84  98  68  27  89  30  44  86  57  49  51  65  71  30  37  63

BasicArrays3.java

import java.util.Random;
public class BasicArrays3 {
    public static void main(String[] args) {
        Random r = new Random();
        int[] arr = new int[1000];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 10 + r.nextInt(90);
            System.out.print(arr[i] + "  ");
            if ((i + 1) % 20 == 0) {
                System.out.println();
            }
        }
    }
}

142. Copying Arrays - Link

Task
Answer

Write a program that creates an array of ten integers. It should put ten random numbers from 1 to 100 in the array. It should copy all the elements of that array into another array of the same size. Then display the contents of both arrays. To get the output to look like mine, you’ll need a several for loops.Create an array of ten integers

Fill the array with ten random numbers (1-100)
Copy the array into another array of the same capacity
Change the last value in the first array to a -7
Display the contents of both arrays

Sample Output

Array 1: 45 87 39 32 93 86 12 44 75 -7
Array 2: 45 87 39 32 93 86 12 44 75 50

CopyingArrays.java

import java.util.Random;
public class CopyingArrays {
    public static void main(String[] args) {
        Random r = new Random();
        int[] arr1 = new int[10];
        int[] arr2 = new int[10];
        for (int i = 0; i < arr1.length; i++) {
            arr1[i] = 1 + r.nextInt(100);
            arr2[i] = arr1[i];
        }
        arr1[arr1.length - 1] = -7;

        System.out.print("Array 1: ");
        for (int i = 0; i < arr1.length; i++) {
            System.out.print(arr1[i] + " ");
        }
        System.out.println();

        System.out.print("Array 2: ");
        for (int i = 0; i < arr2.length; i++) {
            System.out.print(arr2[i] + " ");
        }
    }
}

143. Grades in an Array and a File - Link

Task
Answer

Prompt the user for a first and last name, and the name for a file. Randomly choose five grades for that person from 1 to 100 and store them in an array that can hold five integers. Then output the first and last name and those five grades to the specified file.Sample Output

Name (first last): Marc Antony
Filename: ettu.txt

Here are your randomly-selected grades (hope you pass):
Grade 1: 54
Grade 2: 90
Grade 3: 18
Grade 4: 37
Grade 5: 62

Data saved in "ettu.txt".

Later, if you look in “ettu.txt” (or whatever you called your file), you should see values like this:

ettu.txt

Marc Antony
54 90 18 37 62

GradesInAnArrayAndAFile.java

import java.util.Random;
import java.util.Scanner;
import java.io.FileWriter;
import java.io.File;

public class GradesInAnArrayAndAFile {
    public static void main(String[] args) throws Exception {
        Scanner input = new Scanner(System.in);
        Random r = new Random();

        System.out.print("Name (first last): ");
        String firstName = input.next();
        String lastName = input.next();
        System.out.print("Filename: ");
        String filename = input.next();

        int[] grades = new int[5];
        for (int i = 0; i < grades.length; i++) {
            grades[i] = 1 + r.nextInt(100);
        }

        FileWriter fw = new FileWriter(new File(filename));
        fw.write(firstName + " " + lastName + "\n");
        for (int i = 0; i < grades.length; i++) {
            fw.write(grades[i] + " ");
        }
        fw.close();

        System.out.println("\nHere are your randomly-selected grades (hope you pass):");
        for (int i = 0; i < grades.length; i++) {
            System.out.println("Grade " + (i + 1) + ": " + grades[i]);
        }

        System.out.println("\nData saved in \"" + filename + "\".");
    }
}

144. Finding a Value in an Array - Link

Task
Answer

Create an array that can hold ten integers, and fill each slot with a different random value from 1-50. Display those values on the screen, and then prompt the user for an integer. Search through the array, and if the item is present, say so. It is not necessary to display anything if the value was not found. If the item is in the array multiple times, it’s okay if the program prints the message more than once.Sample Output

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 42

42 is in the array.

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 43

Array: 24 30 31 24 32 33 34 24 35 36
Value to find: 24

24 is in the array.
24 is in the array.
24 is in the array.

FindingAValueInAnArray.java

import java.util.Random;
import java.util.Scanner;

public class FindingAValueInAnArray {
    public static void main(String[] args) {
        Random r = new Random();
        Scanner input = new Scanner(System.in);

        int[] arr = new int[10];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(50);
        }

        System.out.print("Array: ");
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }

        System.out.print("\nValue to find: ");
        int value = input.nextInt();

        for (int i = 0; i < arr.length; i++) {
            if (arr[i] == value) {
                System.out.println("\n" + value + " is in the array.");
            }
        }
    }
}

145. How Many Times? - Link

Task
Answer

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 42

42 was found 1 times.

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 43

43 was found 0 times.

Array: 24 30 31 24 32 33 34 24 35 36
Value to find: 24

24 was found 3 times.

HowManyTimes.java

import java.util.Random;
import java.util.Scanner;

public class HowManyTimes {
    public static void main(String[] args) {
        Random r = new Random();
        Scanner input = new Scanner(System.in);

        int[] arr = new int[10];

        System.out.print("Array: ");
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(50);
            System.out.print(arr[i] + " ");
        }

        System.out.print("\nValue to find: ");
        int value = input.nextInt();

        int count = 0;
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] == value) {
                count++;
            }
        }

        System.out.println("\n" + value + " was found " + count + " times.");
    }
}

146. Is It There or Not? - Link

Task
Answer

Create an array that can hold ten integers, and fill each slot with a different random value from 1-50. Display those values on the screen, and then prompt the user for an integer. Search through the array, and if the item is present, say so. If the value is not in the array, display a single message saying so. Just like the previous assignment, if the value is present more than once, you may display the message as many times as necessary.Sample Output

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 42

42 is in the array.

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 43

43 is not in the array.

IsItThereOrNot.java

import java.util.Random;
import java.util.Scanner;

public class IsItThereOrNot {
    public static void main(String[] args) {
        Random r = new Random();
        Scanner input = new Scanner(System.in);

        int[] arr = new int[10];

        System.out.print("Array: ");
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(50);
            System.out.print(arr[i] + " ");
        }

        System.out.print("\nValue to find: ");
        int value = input.nextInt();

        boolean found = false;
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] == value) {
                found = true;
            }
        }

        if (found) {
            System.out.println("\n" + value + " is in the array.");
        } else {
            System.out.println("\n" + value + " is not in the array.");
        }
    }
}

147. Where Is It? - Link

Task
Answer

Create an array that can hold ten integers, and fill each slot with a different random value from 1-50. Display those values on the screen, and then prompt the user for an integer. Search through the array, and if the item is present, give the slot number where it is located. If the value is not in the array, display a single message saying so. If the value is present more than once, you may either display the message as many times as necessary, or display a single message giving the last slot number in which it appeared.Sample Output

Array: 45 39 32 12 44 50 42 26 16 20
Value to find: 42

42 is in slot 6.

Array: 45 39 32 12 44 50 26 42 16 20
Value to find: 43

43 is not in the array.

Array: 24 30 31 24 32 33 34 24 35 36
Value to find: 24

    you may display either

24 is in slot 0.
24 is in slot 3.
24 is in slot 7.

    or

24 is in slot 7.

WhereIsIt.java

import java.util.Random;
import java.util.Scanner;

public class WhereIsIt {
    public static void main(String[] args) {
        Random r = new Random();
        Scanner input = new Scanner(System.in);

        int[] arr = new int[10];

        System.out.print("Array: ");
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(50);
            System.out.print(arr[i] + " ");
        }

        System.out.print("\nValue to find: ");
        int value = input.nextInt();

        boolean found = false;
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] == value) {
                System.out.println("\n" + value + " is in slot " + i + ".");
                found = true;
            }
        }

        if (!found) {
            System.out.println("\n" + value + " is not in the array.");
        }
    }
}

148. Finding the Largest Value in an Array - Link

Task
Answer

Write a program that creates an array which can hold ten values. Fill the array with random numbers from 1 to 100. Display the values in the array on the screen. Then use a linear search to find the largest value in the array, and display that value.Sample Output

Array: 45 87 39 32 93 86 12 44 75 50

The largest value is 93

FindingTheLargestValueInAnArray.java

import java.util.Random;

public class FindingTheLargestValueInAnArray {
    public static void main(String[] args) {
        Random r = new Random();
        int[] arr = new int[10];
        int max = 0;

        System.out.print("Array: ");
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(100);
            System.out.print(arr[i] + " ");
            if (arr[i] > max) {
                max = arr[i];
            }
        }

        System.out.println("\n\nThe largest value is " + max);
    }
}

149. Locating the Largest Value in an Array - Link

Task
Answer

Array: 45 87 39 32 93 86 12 44 75 50

The largest value is 93
It is in slot 4

LocatingLargest.java

import java.util.Random;

public class LocatingLargest {
    public static void main(String[] args) {
        Random r = new Random();
        int[] arr = new int[10];
        int max = 0;
        int slot = 0;

        System.out.print("Array: ");
        for (int i = 0; i < arr.length; i++) {
            arr[i] = 1 + r.nextInt(100);
            System.out.print(arr[i] + " ");
            if (arr[i] > max) {
                max = arr[i];
                slot = i;
            }
        }

        System.out.println("\n\nThe largest value is " + max);
        System.out.println("It is in slot " + slot);
    }
}

150. Giving an Array a Bunch of Values at Once - Link

Task
Answer

GivingAnArrayABunchOfValuesAtOnce.java

Sample Output

The first array is filled with the following values:
    alpha bravo charlie

After you add in the code you’re supposed to, you should see something more like this:

The first array is filled with the following values:
    alpha bravo charlie delta echo
The second array is filled with the following values:
    11 23 37 41 53

GivingAnArrayABunchOfValuesAtOnce.java

public class GivingAnArrayABunchOfValuesAtOnce {
    public static void main(String[] args) {
        String[] arr1 = {"alpha", "bravo", "charlie", "delta", "echo"};
        int[] arr2 = {11, 23, 37, 41, 53};

        System.out.println("The first array is filled with the following values:");
        for (int i = 0; i < arr1.length; i++) {
            System.out.print("    " + arr1[i]);
        }

        System.out.println("\nThe second array is filled with the following values:");
        for (int i = 0; i < arr2.length; i++) {
            System.out.print("    " + arr2[i]);
        }
    }
}

151. Parallel Arrays - Link

Task
Answer

Create three arrays to store data about five people. The first array should be Strings and should hold their last names. The next array should be doubles and should hold a grade average (on a 100-point scale). The last array should be ints, should hold their student id numbers.Give each of the arrays values (using array initializers). Then print the values of all three arrays on the screen.Finally, ask the user for an ID number to lookup. Search through the ID array until you find that ID, and then print out the values from the same slot number of the other two arrays.Sample Output

Values:
    Mitchell 99.5 123456
    Ortiz 78.5 813225
    Luu 95.6 823669
    Zimmerman 96.8 307760
    Brooks 82.7 827131

ID number to find: 307760

Found in slot 3
    Name: Zimmerman
    Average: 96.8
    ID: 307760

ParallelArrays.java

import java.util.Scanner;

public class ParallelArrays {
    public static void main(String[] args) {
        String[] names = {"Mitchell", "Ortiz", "Luu", "Zimmerman", "Brooks"};
        double[] grades = {99.5, 78.5, 95.6, 96.8, 82.7};
        int[] ids = {123456, 813225, 823669, 307760, 827131};

        System.out.println("Values:");
        for (int i = 0; i < names.length; i++) {
            System.out.println("\t" + names[i] + " " + grades[i] + " " + ids[i]);
        }

        Scanner input = new Scanner(System.in);
        System.out.print("\nID number to find: ");
        int id = input.nextInt();

        for (int i = 0; i < ids.length; i++) {
            if (ids[i] == id) {
                System.out.println("\nFound in slot " + i);
                System.out.println("\tName: " + names[i]);
                System.out.println("\tAverage: " + grades[i]);
                System.out.println("\tID: " + ids[i]);
            }
        }
    }
}

152. Tic-Tac-Toe - Link

Task
Answer

Code an interactive, two-player game of Tic-Tac-Toe. You’ll use a two-dimensional array of chars.Starter Code

TicTacToe.java

Sample Output

(...a game already in progress)

    X   O
    O X X
    X O

'O', choose your location (row, column): 0 1

    X O O
    O X X
    X O

'X', choose your location (row, column): 2 0

    X O O
    O X X
    X X O

The game is a tie.

TicTacToe.java

import java.util.Scanner;

public class TicTacToe
{
    private static char[][] board = new char[3][3];

    public static void main( String[] args )
    {
        Scanner keyboard = new Scanner(System.in);
        initBoard();
        displayBoard();

        char player = 'X';
        int turns = 0, row, col;
        while (true)
        {
            turns++;
            System.out.print( "\n'" + player + "', choose your location (row, column): " );
            row = keyboard.nextInt();
            col = keyboard.nextInt();

            if ( board[row][col] == ' ' )
            {
                board[row][col] = player;
            }
            else
            {
                System.out.println("That slot is already taken.");
                continue;
            }

            displayBoard();
            if ( checkWinner(player) )
            {
                System.out.println("Player " + player + " wins!");
                break;
            }
            if ( turns == 9 )
            {
                System.out.println("The game is a tie.");
                break;
            }

            if ( player == 'X' )
                player = 'O';
            else
                player = 'X';
        }

    }

    public static void initBoard()
    {
        // fills up the board with blanks
        for ( int r=0; r<3; r++ )
            for ( int c=0; c<3; c++ )
                board[r][c] = ' ';
    }

    public static void displayBoard()
    {
        System.out.println("  0  " + board[0][0] + "|" + board[0][1] + "|" + board[0][2]);
        System.out.println("    --+-+--");
        System.out.println("  1  " + board[1][0] + "|" + board[1][1] + "|" + board[1][2]);
        System.out.println("    --+-+--");
        System.out.println("  2  " + board[2][0] + "|" + board[2][1] + "|" + board[2][2]);
        System.out.println("     0 1 2 ");
    }

    public static void displayBoard2()
    {
        for ( int r=0; r<3; r++ )
        {
            System.out.print("\t"+r+" ");
            for ( int c=0; c<3; c++ )
            {
                System.out.print( board[r][c] + " " );
            }
            System.out.println();
        }
        System.out.println("\t  0 1 2 ");
    }

    public static boolean checkWinner(char player)
    {
        for ( int i=0; i<3; i++ )
        {
            if ( board[i][0] == player && board[i][1] == player && board[i][2] == player )
                return true;
            if ( board[0][i] == player && board[1][i] == player && board[2][i] == player )
                return true;
        }
        if ( board[0][0] == player && board[1][1] == player && board[2][2] == player )
            return true;
        if ( board[0][2] == player && board[1][1] == player && board[2][0] == player )
            return true;

        return false;
    }
}

153. Hangman - Link

Task
Answer

Write a program to play a word-guessing game like Hangman.

It must randomly choose a word from a list of words.
It must stop when all the letters are guessed.
It must give them limited tries and stop after they run out.
It must display letters they have already guessed (either only the incorrect guesses or all guesses).

Sample Output

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ _ _ _ _ _ _ _ _

Misses:

Guess:	e

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ _ _ _ _ _ _

Misses:

Guess:	i

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i _ _ _ _ _

Misses:

Guess:	a

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i a _ _ a _

Misses:

Guess:	r

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i a _ _ a _

Misses:	r

Guess:	s

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i a _ _ a _

Misses:	rs

Guess:	t

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i a t _ a _

Misses:	rs

Guess:	n

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i a t _ a n

Misses:	rs

Guess:	o

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	_ e _ i a t _ a n

Misses:	rso

Guess:	l

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	l e _ i a t _ a n

Misses:	rso

Guess:	v

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	l e v i a t _ a n

Misses:	rso

Guess:	h

-=-=-=-=-=-=-=-=-=-=-=-=-=-

Word:	l e v i a t h a n

Misses:	rso

YOU GOT IT!

Play "again" or "quit"? quit

Hangman.java

import java.util.Scanner;
import java.util.Random;

public class Hangman {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        Random r = new Random();

        String[] words = {"leviathan", "gargantuan", "behemoth", "kraken", "hydra"};
        String word = words[r.nextInt(words.length)];
        String guess = "";
        String misses = "";
        int tries = 7;

        System.out.println("Welcome to Hangman!");
        while (true) {
            System.out.println("\n=-=-=-=-=-=-=-=-=-=-=-=-");
            System.out.println("\nWord: " + displayWord(word, guess));
            System.out.println("\nMisses: " + misses);
            System.out.print("\nGuess: ");
            char letter = input.next().charAt(0);

            if (word.contains(String.valueOf(letter))) {
                guess += letter;
            } else {
                misses += letter;
                tries--;
            }

            if (word.equals(displayWord(word, guess).replace(" ", ""))) {
                System.out.println("\n=-=-=-=-=-=-=-=-=-=-=-=-");
                System.out.println("\nWord: " + displayWord(word, guess));
                System.out.println("\nMisses: " + misses);
                System.out.println("\nYOU GOT IT!");
                break;
            }

            if (tries == 0) {
                System.out.println("\nYou ran out of tries!");
                break;
            }
        }

        System.out.print("\nPlay \"again\" or \"quit\"? ");
        String choice = input.next();
        if (choice.equals("again")) {
            main(null);
        }
    }

    public static String displayWord(String word, String guess) {
        String result = "";
        for (int i = 0; i < word.length(); i++) {
            if (guess.contains(String.valueOf(word.charAt(i)))) {
                result += word.charAt(i);
            } else {
                result += "_";
            }
            result += " ";
        }
        return result;
    }
}

Persiapan Belajar

Materi

Task

Programming by Doing

Compiler

Basics and Printing

138. Basic Arrays 0 - Link

139. Basic Arrays 1 - Link

140. Basic Arrays 2 - Link

141. Basic Arrays 3 - Link

142. Copying Arrays - Link

143. Grades in an Array and a File - Link

144. Finding a Value in an Array - Link

145. How Many Times? - Link

146. Is It There or Not? - Link

147. Where Is It? - Link

148. Finding the Largest Value in an Array - Link

149. Locating the Largest Value in an Array - Link

150. Giving an Array a Bunch of Values at Once - Link

151. Parallel Arrays - Link

152. Tic-Tac-Toe - Link

153. Hangman - Link

Persiapan Belajar

Materi

Task

Programming by Doing

Compiler

​138. Basic Arrays 0 - Link

​139. Basic Arrays 1 - Link

​140. Basic Arrays 2 - Link

​141. Basic Arrays 3 - Link

​142. Copying Arrays - Link

​143. Grades in an Array and a File - Link

​144. Finding a Value in an Array - Link

​145. How Many Times? - Link

​146. Is It There or Not? - Link

​147. Where Is It? - Link

​148. Finding the Largest Value in an Array - Link

​149. Locating the Largest Value in an Array - Link

​150. Giving an Array a Bunch of Values at Once - Link

​151. Parallel Arrays - Link

​152. Tic-Tac-Toe - Link

​153. Hangman - Link

138. Basic Arrays 0 - Link

139. Basic Arrays 1 - Link

140. Basic Arrays 2 - Link

141. Basic Arrays 3 - Link

142. Copying Arrays - Link

143. Grades in an Array and a File - Link

144. Finding a Value in an Array - Link

145. How Many Times? - Link

146. Is It There or Not? - Link

147. Where Is It? - Link

148. Finding the Largest Value in an Array - Link

149. Locating the Largest Value in an Array - Link

150. Giving an Array a Bunch of Values at Once - Link

151. Parallel Arrays - Link

152. Tic-Tac-Toe - Link

153. Hangman - Link