Idiot-maker

摘要： https://leetcode.com/problems/number-of-1-bits/Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known a... 阅读全文

摘要： https://leetcode.com/problems/isomorphic-strings/Given two stringssandt, determine if they are isomorphic.Two strings are isomorphic if the characters... 阅读全文

摘要： https://leetcode.com/problems/add-and-search-word-data-structure-design/ Design a data structure that supports the following two operations: search(wo 阅读全文

摘要： https://leetcode.com/problems/implement-trie-prefix-tree/Implement a trie withinsert,search, andstartsWithmethods.Note:You may assume that all inputs ... 阅读全文

摘要： https://leetcode.com/problems/house-robber-ii/ Note: This is an extension of House Robber. After robbing those houses on that street, the thief has fo 阅读全文