Question

Consider the following array: int a[] = { 1, 2, 3, 4, 5, 4, 3, 2, 1, ?); What are the contents of the array a after the following loops complete? a. for (int 1-1; 1 < 10; i++ ) { a[i] a[1-1]; } b. for (int i 9; i > 0; i--) a[i]-ali 1 c. for (int i 0; i <9; it+) a[i]ai ; H e. for (int i-1; i <10; i+) aliaiai 1; h f. for (int i = 1; i < 10; i = i + 2) { a[1] = 0; } g. for (int i 0; i <5; i+) ali 5alil; H h. for (int i = 1; i < 5; 1++) { a[i] = a[9-1]; }

Answer 1

Answers:

a. Answer: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
b. Answer: [1, 1, 2, 3, 4, 5, 4, 3, 2, 1]
c. Answer: [2, 3, 4, 5, 4, 3, 2, 1, 0, 0]
d. Answer: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
e. Answer: [1, 3, 6, 10, 15, 19, 22, 24, 25, 25]
f. Answer: [1, 0, 3, 0, 5, 0, 3, 0, 1, 0]
g. Answer: [1, 2, 3, 4, 5, 1, 2, 3, 4, 5]
h. Answer: [1, 1, 1, 1, 1, 4, 3, 2, 1, 0]

Explanation:

All the answers were obtained by executing the statement independently. i.e., each statement occurs without executing previous loops.

import java.util.Arrays;

public class Tester {

public static void main(String[] args) {

int a[] = {1,2,3,4,5,4,3,2,1,0};

/*for(int i=1; i<10; i++){

a[i] = a[i-1];

}

System.out.println("a. Answer: "+Arrays.toString(a));

for(int i=9; i>0; i--){

a[i] = a[i-1];

}

System.out.println("b. Answer: "+Arrays.toString(a));

for(int i=0; i<9; i++){

a[i]= a[i+1];

}

System.out.println("c. Answer: "+Arrays.toString(a));

for(int i=8; i>=0;i-- ){

a[i] = a[i+1];

}

System.out.println("d. Answer: "+Arrays.toString(a));

for(int i=1; i<10; i++){

a[i] = a[i]+a[i-1];

}

System.out.println("e. Answer: "+Arrays.toString(a));

for(int i=1; i<10; i=i+2){

a[i]=0;

}

System.out.println("f. Answer: "+Arrays.toString(a));

for(int i=0; i<5; i++){

a[i+5]= a[i];

}

System.out.println("g. Answer: "+Arrays.toString(a));*/

for(int i=1; i<5; i++){

a[i] = a[9-1];

}

System.out.println("h. Answer: "+Arrays.toString(a));

}

}