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160. Intersection of Two Linked Lists【Easy】【求两个单链表的第一个交点】

Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: b...

2019-02-27

0 491

203. Remove Linked List Elements【Easy】【未排序链表删除其中的给定值】

Remove all elements from a linked list of integers that have value val. Example: Input: 1->2->6->3->4->5->6, val = 6 Output: 1-&g...

2019-02-27

0 431

234. Palindrome Linked List【Easy】【判断链表是否回文】

Given a singly linked list, determine if it is a palindrome. Example 1: Input: 1->2 Output: false Example 2: Input: 1->2->2->1 Output:...

2019-02-27

0 386

543. Diameter of Binary Tree【Easy】【二叉树的直径】

Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path betwe...

2019-02-26

0 416

114. Flatten Binary Tree to Linked List【Medium】【将给定的二叉树转化为“只有右孩子节点”的链表（树）】

Given a binary tree, flatten it to a linked list in-place. For example, given the following tree: 1 / \ 2 5 / \ \ 3 4 6 Th...

2019-02-25

0 722

Java实现蛇形矩阵

public class Solution { //下x++ 左y-- 上x-- 右y++ public void prints(int n) { int[][] mp = new int[n][n]; for(int i=0; i&...

2019-02-25

0 391

215. Kth Largest Element in an Array【Medium】【找到第 k 大的元素】

Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct elem...

2019-02-25

0 473

524. Longest Word in Dictionary through Deleting【Medium】【删除后得到的字典中的最长单词】

Given a string and a string dictionary, find the longest string in the dictionary that can be formed by deleting some characters of the given string. ...

2019-02-25

0 376

141. Linked List Cycle【Easy】【判断链表是否存在环】

Given a linked list, determine if it has a cycle in it. To represent a cycle in the given linked list, we use an integer pos which represents the p...

2019-02-25

0 440

88. Merge Sorted Array【Easy】【双指针-不用额外空间归并两个有序数组】

Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 as one sorted array. Note: The number of elements initialized in nu...

2019-02-24

0 403