题目 Given a sorted array and a target value, return the index if the target is found. If not, return the index …

题目 Given an array of integers nums, write a method that returns the “pivot” index of this array. W…

题目 Given an array of integers where 1 ≤ a[i] ≤ n (n = size of array), some elements appear twice and others ap…

题目 Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest pat…

题目 Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may a…

题目 Given an m * n matrix M initialized with all 0’s and several update operations. Operations are repres…

题目 Count the number of segments in a string, where a segment is defined to be a contiguous sequence of non-spa…

题目 Assume you are an awesome parent and want to give your children some cookies. But, you should give each chi…

题目 Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node valu…

题目描述 https://leetcode.com/problems/hamming-distance/description/ The Hamming distance between two integers is …

这道题不能用go写，所以用C语言写的 题目 Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it with…

题目 Given a binary tree, return the tilt of the whole tree. The tilt of a tree node is defined as the absolute …