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Given a string s and a non-empty string p, find all the start indices of p's anagrams in s.Strings consists of lowercase English letters only and the 阅读全文
摘要：
Given a sorted integer array nums, where the range of elements are in the inclusive range [lower, upper], return its missing ranges.Example:Input: num 阅读全文
摘要：
Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two 阅读全文