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What is the value of a[1] after the following code is executed?int[] a = {0, 2, 4, 1, 3};for(int i = 0; i < a.length; i++)a[i] = a[(a[i] + 3) % a.length];0123

Question

What is the value of a[1] after the following code is executed?

int[] a = {0, 2, 4, 1, 3};
for(int i = 0; i &lt; a.length; i++)
    a[i] = a[(a[i] + 3) % a.length];

0123

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Solution

The given code is in Java. Let's break it down:

  1. An integer array a is declared and initialized with the values {0, 2, 4, 1, 3}.

  2. A for loop is set up to iterate over the length of the array a.

  3. Inside the loop, each element of the array a at index i is reassigned to the value of the element at the index (a[i] + 3) % a.length.

Let's go through the loop:

  • For i = 0, a[0] is reassigned to a[(0 + 3) % 5] which is a[3]. So, a[0] becomes 1.

  • For i = 1, a[1] is reassigned to a[(2 + 3) % 5] which is a[0]. So, a[1] becomes 1.

  • For i = 2, a[2] is reassigned to a[(4 + 3) % 5] which is a[2]. So, a[2] remains 4.

  • For i = 3, a[3] is reassigned to a[(1 + 3) % 5] which is a[4]. So, a[3] becomes 3.

  • For i = 4, a[4] is reassigned to a[(3 + 3) % 5] which is a[1]. So, a[4] becomes 1.

So, after the code is executed, the array a becomes {1, 1, 4, 3, 1}.

Therefore, the value of a[1] is 1.

This problem has been solved

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