摘要： 题目描述： Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The fu 阅读全文

摘要： 题目描述： Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin 阅读全文

摘要： 题目描述： Given an array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runtime 阅读全文

摘要： 题目描述： Say you have an array for which the ith element is the price of a given stock on day i. Design an algorithm to find the maximum profit. You may 阅读全文

摘要： 题目描述： Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one trans 阅读全文

摘要： 题目描述： Given an index k, return the kth row of the Pascal's triangle. For example, given k = 3, Return [1,3,3,1]. Note: Could you optimize your algorit 阅读全文

摘要： 题目描述： Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5, Return 本题要我们输入一个整数（行数）,返回二维数组形式的杨辉三角（帕斯卡三角）。 解题思 阅读全文

摘要： 题目描述： Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given 阅读全文

摘要： 题目描述： Given a binary tree, find its minimum depth. The minimum depth is the number of nodes along the shortest path from the root node down to the nea 阅读全文

摘要： 题目描述： Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as: Example 1: Given the fol 阅读全文