LeedCode | Python 从入门到放弃

[LEEDCode][038][简单] – 报数（count-and-say）

The count-and-say sequence is the sequence of integers with the first five terms as following: 1. 1 2. 11 3. 21...

松鼠男 5年前 (2018-10-19) 5978℃ 0评论 0喜欢

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 inse...

松鼠男 5年前 (2018-10-19) 5930℃ 0评论 1喜欢

Implement strStr(). Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack. 实现 strStr() 函数。...

松鼠男 5年前 (2018-10-19) 5754℃ 0评论 0喜欢

Given an array nums and a value val, remove all instances of that value in-place and return the new length. Do not allocate extra space for ...

松鼠男 5年前 (2018-10-19) 4883℃ 0评论 1喜欢

Given a sorted array nums, remove the duplicates in-place such that each element appear only once and return the new length. Do not allocate...

松鼠男 5年前 (2018-10-19) 5301℃ 0评论 0喜欢

Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is va...

松鼠男 5年前 (2018-10-19) 4742℃ 0评论 0喜欢

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 ...

松鼠男 5年前 (2018-10-19) 4782℃ 0评论 0喜欢

Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. For example, two is written as II in Roman numeral, just ...

松鼠男 5年前 (2018-08-25) 5265℃ 0评论 0喜欢

Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. 判断一个整数是否是回文数。回文数是指正序（从左...

松鼠男 5年前 (2018-08-21) 3204℃ 0评论 1喜欢

Given a 32-bit signed integer, reverse digits of an integer. 给定一个 32 位有符号整数，将整数中的数字进行反转。示例 1: <strong>输入:</strong&g...

松鼠男 5年前 (2018-08-21) 3722℃ 0评论 0喜欢