[LeetCode] Is Subsequence 是子序列
Given a string s and a string t, check if s is subsequence of t. You may assume that there is only lower case English letters in both s ...
原文：[LeetCode] 891. Sum of Subsequence Widths 子序列宽度之和
Given an array of integers A , consider all non empty subsequences of A . For any sequence S, let thewidthof S be the difference between the maximum and minimum element of S. Return the sum of the wi ...
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