Question

this is a while array mystery from java. please help me to write the code for this question to run it on eclipse !! I want the full code to run this program !!

Consider the following method: public static void arrayMystery (int[] a) { for (int i = a. length - 1; i >= 1; i--) { if (a[i] > ali - 1] + 10) { ali - 1] = a[i - 1] + 5; Indicate in the right-hand column what values would be stored in the array after the method arrayMystery executes if the array in the left-hand column is passed as its parameter. Original Contents of Array Final Contents of Array - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -------- int[] al = {42, 42, 99}; arrayMystery (al); int[] a2 = {6, 18, 4, 25}; arrayMystery (a2); int[] a3 = {5, 10, 20, 35, 40}; arrayMystery (a3); int[] a4 = {-20, 20, 26, 32, 50, 3}; arrayMystery (a4); int[] a5 = {5, 10, 16, 21, 27, 40, 55}; arrayMystery (a5);

Answer 1

program Screen Shot:

1 public class ArrayContents { //A method named 'arrayMystery' which is already given in statement public static void arrayMystery(int[] a){j for(int i= a.length - 1; i >=1 ; i--){i if(a[i] > a[i-1]+10){ a[i-1] = a[i-1] + 5; /* Lets do its dry run of array al i=3-1 = 2 ; 2>=1 is true------if(a[2] > a[1]+10) --> if(99 > 42+10) which is true, so a[1] = a[1] + 5 -->42+5 = 47 then i--; --> i = 1 ---- 1>=1 is true so , if(a[1] > a[0] +10) --> if(47 > 42+10) which is false then again i--; --> i = 0; 0>=1 is false so terminate the loop ------> Lastly We have a[0] =42 which is unchanged , a[1] = 47 changed in first iteration above , a[2] = 99 unchanged

public static void main(String[] args) { //original contents of array & also showing after passing them to arrayMystery int[] a1 = {42 , 42 , 99}; //Showing original contents System.out.println("Original contents of Array a1:"); printArray(a1); //Calling arrayMystery with al as parameter arrayMystery(a1); //After that printing the the contents System.out.println("\nFinal contents of Array a1:"); printArray(a1); //Doing above for all the next Arrays int[] a2 = {6, 18, 4, 25}; System.out.println("\nOriginal contents of Array a2:"); printArray(a2); arrayMystery(a2); System.out.println("\nFinal contents of Array a2:"); printArray(a2);

int[] a3 = {5, 10, 20, 35, 40}; System.out.println("\noriginal contents of Array a3:"); printArray(a3); arrayMystery(a3); System.out.println("\nFinal contents of Array a3 :"); printArray(a3); int[] a4 = {-20, 20, 26, 32, 50, 3}; System.out.println("\nOriginal contents of Array a4:"); printArray(a4); arrayMystery(a4); System.out.println("\nFinal contents of Array a4:"); printArray(a4); int[] a5 = {5, 10, 16, 21, 27, 40, 55}; System.out.println("\noriginal contents of Array a5:"); printArray(a5); arrayMystery(a5); System.out.println("\nFinal contents of Array a5:"); printArray(a5); 80

//Instead of using loop multiple times, lets define a method which would take array as passed argument public static void printArray(int[] arr){i for (int i=0; i<arr.length; i++){ System.out.println(+arr[i]); 89 90 }
Sample output:

Original contents of Array al: 99 Final contents of Array al: Original contents of Array a2: Final contents of Array a2: 11 18

Original contents of Array a3: Final contents of Array a3 : 5 25 35 Original contents of Array a4: -20

Final contents of Array a4: -15 25 Original contents of Array a5: Final contents of Array a5:

Program code to copy:

public class ArrayContents {

    //A method named 'arrayMystery' which is already given in statement

    public static void arrayMystery(int[] a){

        for(int i= a.length - 1; i >=1 ; i--){

            if(a[i] > a[i-1]+10){
                a[i-1] = a[i-1] + 5;
            }
        }
        /* Lets do its dry run of array a1
            i=3-1 = 2 ; 2>=1 is true------if(a[2] > a[1]+10) --> if(99 > 42+10) which is true, so a[1] = a[1] + 5 -->42+5 = 47
            then i--; --> i = 1 ---- 1>=1 is true so , if(a[1] > a[0]+10) --> if(47 > 42+10) which is false
            then again i--; --> i = 0; 0>=1 is false so terminate the loop

            ------> Lastly We have a[0] =42 which is unchanged , a[1] = 47 changed in first iteration above , a[2] = 99 unchanged
         */
    }

    public static void main(String[] args) {

        //original contents of array & also showing after passing them to arrayMystery

        int[] a1 = {42 , 42 , 99};

        //Showing original contents
        System.out.println("Original contents of Array a1:");
        printArray(a1);

        //Calling arrayMystery with a1 as parameter

        arrayMystery(a1);

        //After that printing the the contents
        System.out.println("\nFinal contents of Array a1:");
        printArray(a1);

        //Doing above for all the next Arrays

        int[] a2 = {6, 18, 4, 25};
        System.out.println("\nOriginal contents of Array a2:");
        printArray(a2);

        arrayMystery(a2);

        System.out.println("\nFinal contents of Array a2:");
        printArray(a2);

        int[] a3 = {5, 10, 20, 35, 40};
        System.out.println("\nOriginal contents of Array a3:");
        printArray(a3);

        arrayMystery(a3);

        System.out.println("\nFinal contents of Array a3:");
        printArray(a3);

        int[] a4 = {-20, 20, 26, 32, 50, 3};
        System.out.println("\nOriginal contents of Array a4:");
        printArray(a4);

        arrayMystery(a4);

        System.out.println("\nFinal contents of Array a4:");
        printArray(a4);

        int[] a5 = {5, 10, 16, 21, 27, 40, 55};
        System.out.println("\nOriginal contents of Array a5:");
        printArray(a5);

        arrayMystery(a5);

        System.out.println("\nFinal contents of Array a5:");
        printArray(a5);

    }

    //Instead of using loop multiple times, lets define a method which would take array as passed argument & prints its values

    public static void printArray(int[] arr){

        for (int i=0; i<arr.length; i++){
            System.out.println(+arr[i]);
        }
    }
}

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