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全部文章（共17篇）

LeetCode 476. Number Complement

Given a positive integer, output its complement number. The complement strategy is to flip the bits of its binary representation. Note: The given in...

leetcode

2017-02-22

0 487

LeetCode 1. Two Sum

Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have e...

leetcode

2017-02-20

0 434

LeetCode 2. Add Two Numbers

You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contai...

leetcode

2017-02-20

0 546

LeetCode 3. Longest Substring Without Repeating Characters

Given a string, find the length of the longest substring without repeating characters. Examples: Given "abcabcbb", the answer is "abc...

leetcode

2017-02-20

0 540

LeetCode 7. Reverse Integer

Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 Note: The input is assumed to be a 32-bit signed intege...

leetcode

2017-02-20

0 480

LeetCode 66. Plus One

Given a non-negative integer represented as a non-empty array of digits, plus one to the integer. You may assume the integer do not contain any leadi...

leetcode

2017-02-20

0 504

LeetCode 8. String to Integer (atoi)

Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you want a challenge, please do not see below...

leetcode

2017-02-20

0 445

LeetCode 35. Search Insert Position

Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or...

leetcode

2017-02-20

0 669

LeetCode 58. Length of Last Word

Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the last wor...

leetcode

2017-02-20

0 485

LeetCode 20. Valid Parentheses

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. The brackets must close in the...

leetcode

2017-02-21

0 515