713. Subarray Product Less Than K 713. Subarray Product Less Than K 這一題很是 LeetCode 上面難度中等的題目,題目結構也很容易就可以想到是滑動窗口的題目,
862. Shortest Subarray with Sum at Least K 862. Shortest Subarray with Sum at Least K 這個題目其實很近似於雙指針的問題,我在看完題目後的第一個想法是,
1358. Number of Substrings Containing All Three Characters 1358. Number of Substrings Containing All Three Characters 這個題目是一個很標準的 Sliding