原创 leetcode之Best Time to Buy and Sell Stock && II && III
Best Time to Buy and Sell Stock的原題如下： Say you have an array for which the ith element is the price of a given stock o
2020-06-24 14:18:20
原创 leetcode之Scramble String
原題如下： Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursiv
2020-06-24 14:18:20
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原创 leetcode之Anagrams
原題如下： Given an array of strings, return all groups of strings that are anagrams. 不得不說，這道題的題意太模糊了，首先簡單介紹一下Anagram（迴文構詞法）
2020-06-24 14:18:09
原创 leetcode之Sqrt(x)
原題如下： Implement int sqrt(int x). Compute and return the square root of x. 普通遍歷方法肯定是超時的，這道題其實是一個有序數列中的查找問題，所以如果能想到這點兒
2020-06-24 14:18:09
原创 leetcode之Permutations II
原題如下： Given a collection of numbers that might contain duplicates, return all possible unique permutations. For exam
2020-02-22 07:12:27
原创 leetcode之ZigZag Conversion
原題如下： The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want
2020-02-22 07:12:27
原创 leetcode之Distinct Subsequences
原題如下： Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a strin
2020-02-22 07:12:27
原创 leetcode之Reverse Nodes in k-Group
原題如下： Given a linked list, reverse the nodes of a linked list k at a time and return its modified list. If the numbe
2020-02-22 07:12:27
原创 leetcode之Add Two Numbers
原題如下： You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order an
2020-02-22 07:12:27
原创 leetcode之Jump Game && Jump Game II
Jump Game的原題如下： Given an array of non-negative integers, you are initially positioned at the first index of the array
2020-02-22 07:12:27
原创 leetcode之Merge k Sorted Lists
原題如下： Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity. 思路一：按照歸併排序的思路
2020-02-22 07:12:27
原创 leetcode之Copy List with Random Pointer
原題如下： A linked list is given such that each node contains an additional random pointer which could point to any node
2020-02-22 07:12:27
原创 leetcode之Remove Duplicates from Sorted List II
原題如下： Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from th
2020-02-22 07:12:27
原创 leetcode之Edit Distance
原題如下： Given two words word1 and word2, find the minimum number of steps required to convert word1 to word2. (each ope
2020-02-22 07:12:27
原创 leetcode之Rotate List
原題如下： Given a list, rotate the list to the right by k places, where k is non-negative. For example: Given 1->2->3->4
2020-02-22 07:12:27