Programming Language is JAVA: a) What are the contents of a1 and a2 after the co

Question

Programming Language is JAVA:

a) What are the contents of a1 and a2 after the code below executes?

int [] a1 = new int[5];

for (int i = 0; i < a1.length; i++) a1[i] = i+1;

int [] a2 = a1;

a1[0] = a2[1];

a2[2] = a2[0];

b) Write a method void copyArray(int [] source, int [] destination) that copies the items of source into destination. If destination is longer than source then pad the remaining elements with 0's. If destination is shorter than source then just copy the first destination.length elements.

Explanation / Answer

a) What are the contents of a1 and a2 after the code below executes?

Answer: Both will have same contents

a1 = [2, 2, 2, 4, 5]
a2 = [2, 2, 2, 4, 5]

Question b

public static void copyArray(int [] source, int [] destination) {
       int i=0;
       int length;
       int diff = 0;
       if(destination.length> source.length){
           length= source.length;
           diff= destination.length- source.length;
       }
       else{
           length=destination.length;
       }
       for( i=0; i<length; i++){
           destination[i]=source[i];
       }
       for( i=0; i<diff; i++){
           destination[i]=0;
       }
   }

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.