167. Two Sum II – Input array is sorted-两数之和 II – 输入有序数组
给定一个已按照非递减顺序排列的整数数组numbers，请你从数组中找出两个数满足相加之和等于目标数target... » 阅读全文
160. Intersection of Two Linked Lists-相交链表
Write a program to find the node at which the intersect... » 阅读全文
155. Min Stack-最小栈
Design a stack that supports push, pop, top, and retrie... » 阅读全文
141. Linked List Cycle-环形链表
Given head, the head of a linked list, determine if the... » 阅读全文
125. Valid Palindrome-验证回文串
Given a string, determine if it is a palindrome, consid... » 阅读全文
122. Best Time to Buy and Sell Stock II-买卖股票的最佳时机 II
Say you have an array prices for which the ith element ... » 阅读全文
119. Pascal’s Triangle II-杨辉三角 II
Given an integer rowIndex, return the rowIndex-th row o... » 阅读全文
118. Pascal’s Triangle-杨辉三角
Given a non-negative integer numRows, generate the firs... » 阅读全文
112. Path Sum-路径总和
Given a binary tree and a sum, determine if the tree ha... » 阅读全文