摘要：Given an array of integers, a ramp is a tuple for which `i 这道题说给了一个数组A，这里定义了一种叫做 Ramp 的范围 (i, j)，满足 `i Github 同步地址: 参考资料： "LeetCode All in One 题目讲解汇总( 阅读全文

摘要：In a array of size , there are unique elements, and exactly one of these elements is repeated times. Return the element repeated times. Example 1: Exa 阅读全文

摘要：We are given an array A of N lowercase letter strings, all of the same length. Now, we may choose any set of deletion indices, and for each string, we 阅读全文