Array & String — Reasoning Check

1. Merge nums1=[1,6,0,0] (m=2) with nums2=[2,5]. After writing 6 to index 3, nums1 is [1,6,0,6]. Which claim explains why this intermediate state is safe?

Select one answer.

The first two entries are final because they were sorted before the merge. Only index 3 is final; the next comparison uses unread values 1 and 5. The duplicate 6 must be cleared before the next comparison.

2. Keep at most two copies of each value in sorted [1,1,1,2,2,3,3,3]. What logical length should be returned? Enter one integer.

3. A Jump Game scan updates farthest using nums[i] before testing whether i is reachable. On [2,0,1,0,4], which correction prevents a false success?

Select one answer.

Reject index 4 as unreachable before reading its jump length. Use the largest jump value anywhere in the array as the initial reach. Reject the input as soon as any zero appears.

4. With any number of stock trades, at most one share held, and no fees, what maximum profit is possible for prices [4,1,5,3,6]? Enter one integer.

5. Boyer-Moore ends with a candidate on [2,1,2,3]. Now remove the promise that a strict majority exists. What additional step establishes whether the candidate is a majority?

Select one answer.

Accept it whenever the cancellation balance is positive. Accept it if it occurred more often than the final different value. Count its occurrences in the original input and require more than len(nums)/2.

6. For citations [0,1,4,4,5], what is the H-index? Enter one integer.