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]
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 < a.length; i++)a[i] = a[(a[i] + 3) % a.length]
Solution
The given code is in Java. Let's break it down:
-
An integer array
ais declared and initialized with the values{0, 2, 4, 1, 3}. -
A
forloop is set up to iterate over the length of the arraya. -
Inside the loop, each element of the array
aat indexiis reassigned to the value of the element at the index(a[i] + 3) % a.length.
Let's see how this works for a[1]:
-
Initially,
a[1]is2. -
In the loop, when
iis1,a[1]is reassigned to the value ofa[(a[1] + 3) % a.length], which isa[(2 + 3) % 5]ora[0]. -
The value of
a[0]is0.
So, after the code is executed, the value of a[1] is 0.
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