What will be the output of the following pseudocode?Integer j, m Set m = -1 Integer a[5] = { 3, 0, 1, 0, 2 } For(each j from m+1 to m+5) If(a[j] & j) a[j] = a[j] & j End If End For m=a[0] + a[4] - a[1] Print mQuestion 75AnswerA.5B.4C.15D.8
Question
What will be the output of the following pseudocode?Integer j, m Set m = -1 Integer a[5] = { 3, 0, 1, 0, 2 } For(each j from m+1 to m+5) If(a[j] & j) a[j] = a[j] & j End If End For m=a[0] + a[4] - a[1] Print mQuestion 75AnswerA.5B.4C.15D.8
Solution
The pseudocode is performing a bitwise AND operation between the array index and the value at that index. The bitwise AND operation between two numbers returns a new number which has all the bits set (to 1) where both numbers have their bits set.
Here's the step by step execution:
- Initialize
mto-1andato{3, 0, 1, 0, 2}. - For each
jfromm+1tom+5, which is from0to4(sincemis-1), do the following:- If
a[j] & jis not0, seta[j]toa[j] & j.
- If
- After the loop, the array
abecomes{0, 0, 0, 0, 0}because none of the bitwise AND operations between the indices and the values at those indices are non-zero. - Set
mtoa[0] + a[4] - a[1], which is0 + 0 - 0, somis0. - Print
m.
So, the output of the pseudocode is 0. However, this option is not available in the provided choices (A.5, B.4, C.15, D.8). There might be a mistake in the question or the provided choices.
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