Which of the following is the correct loop invariant for the for loop ? At the s

ID: 3674750 • Letter: W

Question

Which of the following is the correct loop invariant for the for loop?

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[1..i+1].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[i+1..n].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[i..n].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[1..i].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[1..i+1].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[i+1..n].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[i..n].

At the start of each iteration i of the for loop, sum contains the sum of all the elements in the subarray A[1..i].

Yes, your answer is corect.

Basically, iteration is starting from n, and in each iteration it adds A[i] to sum and decrement value of i,

so, at any point , we will be having sum from A[n] to A[i+1], and in ith interaction, we will add A[i]

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