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摘要： 1.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 f 阅读全文

摘要： 1.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： 1.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: begi 阅读全文

摘要： 1.题目描述 Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Note: Do not modify the linked list. 给出一个链表，返回链 阅读全文

摘要： 1.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 tran 阅读全文

摘要： 1.题目描述 Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5, Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6 阅读全文

摘要： 1.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： 1.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 ne 阅读全文

摘要： 1.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: a binary tree in which 阅读全文

摘要： 1.题目描述 Given an array where elements are sorted in ascending order, convert it to a height balanced BST. For this problem, a height-balanced binary tr 阅读全文