Consider the following code: int[] Arr = { 77, 10, 124, 63, 22}; int x = Arr[4]; for (int index=3; index = 0; index--) { if (Arr[index]

Question

Consider the following code: int[] Arr = { 77, 10, 124, 63, 22}; int x = Arr[4]; for (int index=3; index >= 0; index--) {
if (Arr[index] < x) {
x =
Arr[index]; }
} MessageBox.Show(x.ToString()); What will be the output displayed on Message Box?

BlackTom AI · Accepted Answer

Begin by identifying the initial values and the loop behavior. The array is Arr = {77, 10, 124, 63, 22}, and x starts as Arr[4], which is 22. The loop runs with index from 3 down to 0, evaluating if Arr[index] < x and updating x accordingly.
Option 1: 63. This would require x to end up as 63, but the only way to increase x is not allowed; the code only assigns when Arr[index] < x, which would make x smaller, not larger. Since 63 is not less than the starting 22, this value cannot become the final x.
Option 2: 77. Similar reasoning: 77 is greater than 22, so Arr[index] < x would be false for index=3 (63) and others; there is no path that makes x become 77 through the given comparison logic, because updates only occur when an element is smaller than the current x.
Option 3: 10. This is a plausible outcome. As the loop checks indices 3, 2, 1, 0 in that order, Arr[1] equals 10, which is less than the current x (22) at that moment, triggering x = 10. After that, subsequent checks (77 at index 0, 124, 63) are not smaller than 10, so x remains 10.
Option 4: 22. Although 22 is the initial value of x, the loop has a chance to reduce x to a smaller value (namely 10) if a smaller Arr[index] is found. Since 10 is indeed found in the loop, the final value cannot remain 22.
In summary, the loop updates x only when it encounters a smaller array element than the current x, and the smallest encountered during the loop is 10, which is assigned when index = 1. Therefore, the final output is 10.

Introduction To Object Oriented Programming (CT044-3-1-IOOP-25-RESIT)

Consider the following code: int[] Arr = { 77, 10, 124, 63, 22}; int x = Arr[4]; for (int index=3; index >= 0; index--) { if (Arr[index] < x) { x = Arr[index]; } } MessageBox.Show(x.ToString()); What will be the output displayed on Message Box?

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