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+// 1493. Longest Subarray of 1's After Deleting One Element
+#include "leetcode.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.
+ */
+
+class Solution {
+public:
+ int longestSubarray(vector<int> &nums) {
+ int ans = 0;
+ for (int i = 0, j = 0, skip = 0; i < nums.size(); ++i) {
+ skip += !nums[i];
+ if (skip > 1)
+ skip -= !nums[j++];
+ ans = max(ans, i - j);
+ }
+ return ans;
+ }
+};
+
+int main() {
+ Solution obj;
+ vector<int> n1 = {1, 1, 0, 1}, n2 = {0, 1, 1, 1, 0, 1, 1, 0, 1},
+ n3 = {1, 1, 1};
+ printf("%d\n", obj.longestSubarray(n1)); // expect: 3
+ printf("%d\n", obj.longestSubarray(n2)); // expect: 5
+ printf("%d\n", obj.longestSubarray(n3)); // expect: 2
+}