crazy_jack

Subjecthttps://leetcode.com/problems/isomorphic-strings/Explain判断两个字符串是否是”同构“字符串。Solution/** * HashMap * 25ms * * @param s * @param t * @return */ public boolean isIsomorphic(...

Subjecthttps://leetcode.com/problems/evaluate-reverse-polish-notation/Explainhttps://en.wikipedia.org/wiki/Reverse_Polish_notationReverse Polish Notation – RPN也就是 “逆波兰式” ，又称 “后缀表达式” 。如：我们平时写a+...

https://leetcode.com/problems/rotate-array/DescriptionGiven an array, rotate the array to the right by k steps, where k is non-negative.Example 1:Input: [1,2,3,4,5,6,7] and k = 3Output: [5,6,7,1...

汉诺塔问题 把A柱子上若干个圆盘（从大到小依次往上），借助柱子B，移动到柱子C上去，要求一次只能移动一个圆盘，且大盘子不能放在小盘子上面。递归求解！# Hanoi Towerprint 'a ------------> c'def hanoi(n, a, b, c): if n == 1: move(n, a, c) else: hano

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51820937Subject 出处：https://leetcode.com/problems/reverse-linked-list-ii/ Reverse a linked list from position m to n. Do it in-place and in one-

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51820937Subject 出处：https://leetcode.com/problems/reverse-linked-list/ Reverse a singly linked list.Explain 反转单链表Solutionsolution 1 最简单的方式

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51820937Subject 出处：https://leetcode.com/problems/add-two-numbers/ You are given two linked lists representing two non-negative numbers. The dig

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51820937Subject 出处：https://leetcode.com/problems/integer-to-english-words/ Convert a non-negative integer to its english words representation.

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51541984Subject 出处：https://leetcode.com/problems/container-with-most-water/ Given n non-negative integers a1, a2, …, an, where each represents

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/ Given preorder and inorder traversa

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/invert-binary-tree/ Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/same-tree/ Given two binary trees, write a function to check if they are equal or not. Tw

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/invert-binary-tree/ Invert a binary tree. 4 / \ 2 7 / \ / \1 3 6 9to

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/ Given a binary tree, return the zigzag level ord

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51477967Subject 出处：https://leetcode.com/problems/binary-tree-level-order-traversal-ii/Given a binary tree, return the bottom-up level order tra

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51477967Subject 出处：https://leetcode.com/problems/binary-tree-level-order-traversal/Given a binary tree, return the level order traversal of its

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/binary-tree-postorder-traversal/ Hard 级别Given a binary tree, return the postorder travers

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/binary-tree-inorder-traversal/Given a binary tree, return the inorder traversal of its nodes'

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/binary-tree-preorder-traversal/ Given a binary tree, return the preorder traversal of its node

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51471280Subject 出处：https://leetcode.com/problems/binary-tree-paths/Given a binary tree, return all root-to-leaf paths.For example, given the fo

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51439523Subject 出处：https://leetcode.com/problems/two-sum/ Given an array of integers, return indices of the two numbers such that they add

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/50771703Subject 出处：https://leetcode.com/problems/spiral-matrix/ Given a matrix of m x n elements (m rows, n columns), return all elements o

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51416037Subject 出处：https://leetcode.com/problems/spiral-matrix/ Given an integer n, generate a square matrix filled with elements from 1 to

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51416284Subject 出处：https://leetcode.com/problems/reverse-string/ Write a function that takes a string as input and returns the string rever

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51416284Subject 出处：https://leetcode.com/problems/reverse-vowels-of-a-string/ Write a function that takes a string as input and reverse only

转载请注明出处：http://blog.youkuaiyun.com/crazy1235/article/details/51429823Subject 出处：https://leetcode.com/problems/compare-version-numbers/ Compare two version numbers version1 and version2. If version1