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// 1493. Longest Subarray of 1's After Deleting One Element
#include <math.h>
#include <stdio.h>
/*
* given a binary array 'nums', you should delete one element from it. return
* the size of the longest non-empty subarray containing only 1's in the
* resulting array. return 0 if there is no such subarray.
*/
int longestSubarray(int *nums, int nums_size) {
int n = nums_size, zero_cnt = 0, ans = 0, left = 0;
for (int right = 0; right < n; right++) {
if (!nums[right])
zero_cnt++;
while (zero_cnt > 1) {
if (!nums[left])
zero_cnt--;
left++;
}
ans = fmax(ans, right - left);
}
return ans;
}
int main() {
int n1[] = {1, 1, 0, 1}, n2[] = {0, 1, 1, 1, 0, 1, 1, 0, 1}, n3[] = {1, 1, 1};
printf("%d\n", longestSubarray(n1, 4)); // expect: 3
printf("%d\n", longestSubarray(n2, 9)); // expect: 5
printf("%d\n", longestSubarray(n3, 3)); // expect: 2
}
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