原创 leetcode_[python/C++]_424_Longest Repeating Character Replacement
題目鏈接 【題目】 Given a string that consists of only uppercase English letters, you can replace any letter in the strin
2020-07-06 16:32:02
1
原创 leetcode_[python/C++] 179. Largest Number(數字組合成最大數）
題目鏈接 【題目】 Given a list of non negative integers, arrange them such that they form the largest number. For example
2020-07-06 16:32:02
3
原创 leetcode_[python/C++]_91_Decode Ways_動態規劃
題目鏈接 【題目】 A message containing letters from A-Z is being encoded to numbers using the following mapping: ‘A’ ->
2020-07-06 16:32:02
原创 leetcode_[python/C++]_21. Merge Two Sorted Lists(合併有序鏈表）
題目鏈接 【題目】 Merge two sorted linked lists and return it as a new list. The new list should be made by splicing toge
2020-02-22 19:06:17
原创 leetcode_[python/C++]_98_Validate Binary Search Tree
題目鏈接 【題目】 Given a binary tree, determine if it is a valid binary search tree (BST). Assume a BST is defined as fol
2020-02-22 19:06:17
原创 數獨_約束求解_by C++ and Python
利用每一個空格的域空間進行約束求解，註釋應該夠了，直接貼代碼 C++: #include <iostream> #include <string> #include <algorithm> #include <vector> #i
2020-02-22 19:06:17
原创 leetcode_[Python/C++]_3_Longest Substring Without Repeating Characters(不重複子串最大長度）
題目鏈接 【題意】 給定一個字符串，找到其中的一個最長的字串，使得這個子串不包含重複的字符 【分析】 題目很簡單，第一眼想到的是動態規劃，另外主要是爲了分享一些做法寫法 C++ class Solution { publ
2020-02-22 19:06:17
原创 leetcode_[python/C++]_395_Longest Substring with At Least K Repeating Characters_(遞歸非遞歸）
題目鏈接 【題目】 Find the length of the longest substring T of a given string (consists of lowercase letters only) such t
2020-02-22 19:06:17
1
原创 leetcode_[python/C++]_121/122/123/188.Best Time to Buy and Sell Stock I/II/III/IV
121. Best Time to Buy and Sell Stock [題目] Say you have an array for which the ith element is the price of a given
2020-02-22 19:06:17
原创 leetcode_[python/C++] 17.Letter Combinations of a Phone Number(手機號碼字符組合）
題目鏈接 【題目】 Given a digit string, return all possible letter combinations that the number could represent. A mappin
2020-02-22 19:06:17
原创 leetcode_[python/C++] 329. Longest Increasing Path in a Matrix(DFS+記憶化搜索）
題目鏈接 【題目】 Given an integer matrix, find the length of the longest increasing path. From each cell, you can either
2020-02-22 19:06:17
2
原创 leetcode_[python/java/javascript/C++]_401_Binary Watch（二進制手錶）
題目鏈接 【題目】 A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom rep
2020-02-22 19:06:17
原创 leetcode_[python/C++]_395_Longest Substring with At Least K Repeating Characters
題目鏈接 【題目】 Find the length of the longest substring T of a given string (consists of lowercase letters only) such that
2020-02-22 19:06:17
1
原创 leetcode_326. Power of Three分析
類似的題解詳見： leetcode_232. Power of Two分析 leetcode_342. Power of Four分析 題目鏈接 【題目】 Given an integer, write a funct
2020-02-22 19:06:17
原创 leetcode_[python/C++]_300_Longest Increasing Subsequence
題目鏈接 【題目】 Given an unsorted array of integers, find the length of longest increasing subsequence. For example Gi
2020-02-22 19:06:17