原创 [leetcode] 8.String to Integer (atoi)
題目： Implement atoi to convert a string to an integer. Hint: Carefully consider all possible input cases. If you wa
2020-02-22 08:52:41
原创 [leetcode] 14.Longest Common Prefix
題目： Write a function to find the longest common prefix string amongst an array of strings. 題意： 找出字符串的最長公共前綴。 思路
2020-02-22 08:52:41
原创 [leetcode] 151.Reverse Words in a String
題目： Given an input string, reverse the string word by word. For example, Given s = “the sky is blue”, return “bl
2020-02-22 08:52:41
原创 [leetcode] 76.Minimum Window Substring
題目： Given a string S and a string T, find the minimum window in S which will contain all the characters in T in co
2020-02-22 08:52:41
原创 [leetcode] 273.Integer to English Words
題目： Convert a non-negative integer to its english words representation. Given input is guaranteed to be less than
2020-02-22 08:52:40
原创 [leetcode] 300. Longest Increasing Subsequence
題目： Given an unsorted array of integers, find the length of longest increasing subsequence. For example, Given [10, 9
2018-09-04 19:50:54
原创 [leetcode] 306. Additive Number
題目： Additive number is a string whose digits can form additive sequence. A valid additive sequence should contain at l
2018-09-04 19:50:53
3
原创 [leetcode] 295. Find Median from Data Stream
題目：Median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value. So
2018-09-04 19:50:53
原创 [leetcode] 329. Longest Increasing Path in a Matrix
題目： Given an integer matrix, find the length of the longest increasing path. From each cell, you can either move to fo
2018-09-04 19:50:52
原创 [leetcode] 292.Nim Game
題目： You are playing the following Nim Game with your friend: There is a heap of stones on the table, each time one of
2018-09-04 19:50:52
原创 [leetcode] 304. Range Sum Query 2D - Immutable
題目： Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1
2018-09-04 19:50:52
原创 [leetcode] 140.Word Break II
題目： Given a string s and a dictionary of words dict, add spaces in s to construct a sentence where each word is a vali
2018-09-04 19:50:52
原创 [leetcode] 274.H-Index
題目： Given an array of citations (each citation is a non-negative integer) of a researcher, write a function to comput
2018-09-04 19:50:52
原创 [leetcode] 299. Bulls and Cows
題目： You are playing the following Bulls and Cows game with your friend: You write down a number and ask your friend to
2018-09-04 19:50:51
原创 [leetcode] 301. Remove Invalid Parentheses
題目： Remove the minimum number of invalid parentheses in order to make the input string valid. Return all possible resu
2018-09-04 19:50:51