MC43700000046E4的博客_LeetCode

LeetCode-Java-893. Groups of Special-Equivalent Strings

题目You are given an array A of strings.Two strings S and T are special-eq

bc

数位

数组

原创 2022-12-14 14:56:10 70 阅读

LeetCode-Java-637. Average of Levels in Binary Tree

题目Given a non-empty binary tree, return the average value of the nodes on each level in the form

i++

List

原创 2022-12-14 14:55:36 157 阅读

LeetCode-Java-136. Single Number

题目Given a non-empty array of integers, every element appears twice except for one. Find

oo

原创 2022-12-14 14:55:34 130 阅读

LeetCode-Java-496. Next Greater Element I

题目You are given two arrays (without duplicates) nums1 and nums2 where nums1’s elements are subset of nums2. Find all the n

i++

原创 2022-12-14 14:54:50 69 阅读

LeetCode-Java-104. Maximum Depth of Binary Tree

题目Given a binary tree, find its maximum depth.The maximum depth is the number of nodes along the longest ith no c...

Math

原创 2022-12-14 14:54:29 41 阅读

LeetCode-Java-35.Search Insert Position

题目Given a sorted array and a target value, return the index if the target is found. If no

数组

数据

原创 2022-12-14 14:54:08 37 阅读

LeetCode-Java-804. Unique Morse Code Words

题目"-.-.", and so

Code

i++

原创 2022-12-14 14:54:03 81 阅读

LeetCode-Java-852. Peak Index in a Mountain Array

题目 Let's call an array A a mountain if the following properties hold: A.length >= 3 There exists some 0 < i < A.length - 1 such that A[0] < A[1] < ... A[i-1] < A[i] > A[i+1] &...

ii

原创 2022-12-14 14:53:52 32 阅读

LeetCode-Java-500. Keyboard Row

题目Given a List of words, return the words that can be typed u

List

i++

原创 2022-12-14 14:53:51 64 阅读

LeetCode-Java-771. Jewels and Stones

题目 any of t...

i++

ide

原创 2022-12-14 14:53:46 19 阅读

LeetCode-Java-811. Subdomain Visit Count

题目A website domain like "discuss.leetcode.com" consists of variou

ci

数据结构

sed

原创 2022-12-14 14:53:30 54 阅读

LeetCode-Java-557. Reverse Words in a String III

题目Given a string, you need to reverse the order of characters in each word w

Word

i++

原创 2022-12-14 14:53:19 63 阅读

LeetCode-Java-707. Design Linked List

题目Design your implementation of the linked list. You can choose to use the singly linked list or the doubly linked list. A node in a singly linked list should have two attributes: val and next. val...

i++

原创 2022-12-14 14:53:03 84 阅读

LeetCode-Java-9. Palindrome Number

题目

回文数

单线程

字符串

原创 2022-12-14 14:52:02 50 阅读

LeetCode-Java-13. Roman to Integer

题目. Symbol Value I 1 V 5 X 10 L 50 C 100 D ...

sed

ci

i++

原创 2022-12-14 14:51:52 43 阅读

LeetCode-Java-657. Judge Route Circle

题目e original place. The move sequence is represen...

ci

原创 2022-12-14 14:51:43 28 阅读

LeetCode-Java-14. Longest Common Prefix

Write a function to find the longest common prefix string amongst an array of strings. If there is no common prefix, return an empty string "". Example 1: Input: ["flower","flow","flight"] Ou...

Math

二分法

i++

原创 2022-12-14 14:51:37 41 阅读

LeetCode-Java-238. Product of Array Except Self

题目Given an array nums of n integers where n > 1, return an array output such that output[

数组

空间复杂度

迭代

原创 2022-12-14 14:51:31 59 阅读

LeetCode-Java-27. Remove Element

题目Given an array nums and a value val, remove all instances of that value in-place and return the new length.给定一个

数组

sed

i++

原创 2022-12-14 14:51:27 81 阅读

LeetCode-Java-766. Toeplitz Matrix

题目A matrix is Toeplitz if every diagonal from top-left to bottom-right has the same element.Now given an M x N matrix, return True if and only if the matrix is Toeplitz.Example 1:Input:mat...

i++

原创 2022-12-14 14:51:18 30 阅读

LeetCode-Java-28. Implement strStr()

题目Implement strStr().Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.Example 1:Input: haystack = "hello", needle = "ll"Output: 2Example 2:Input:

i++

Java

原创 2022-12-14 14:51:10 53 阅读

LeetCode-Java-461. Hamming Distance

Note: 0 ...

百度

汉明距离

原创 2022-12-14 14:50:56 36 阅读

LeetCode-Java-617. Merge Two Binary Trees

题目Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are not.You need to merge them into a new binar...

sed

原创 2022-12-14 14:50:16 58 阅读

LeetCode-Java-709. To Lower Case

题目Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase.Example 1:Input: "Hello"Output: "hello"Example 2:Input: "here"Output: "here"...

其它

原创 2022-12-14 14:50:05 71 阅读

LeetCode-Java-561. Array Partition I

题目Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), ..., (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large a...

其它

原创 2022-12-14 14:50:00 68 阅读

LeetCode-Java-476. Number Complement

题目Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation.Note:The given integer is guaranteed to fit within the range of a 32-

进制

原创 2022-12-14 14:49:22 84 阅读

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