前言 [LeetCode 题解]系列传送门: http://www.cnblogs.com/double-win/category/573499.html 1.题目描述 The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for b
题目来源 https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/ Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). 题意分
6.ZigZag Conversion 题目: The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility) P A H N A P L S I I G Y I R And then read line b
我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 006.ZigZag Conversion[E] 题目 The string “PAYPALISHIRING” is written in a zigzag pattern on a given number of rows like this: (you may w
problem: The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility) P A H N A P L S I I G Y I R And then read line by line: "P
题面 题解 考虑kruscal的过程 对于三个点\(x, y, x + 1\), 我们可以将\((x, y, z), (y, x + 1, z + 1)\)看做\((x, y, z), (x, x + 1, z + 1)\) 因为当连完\((x, y, z)\)后, \(x\)与\(y\)已经联通, 所以\((y, x + 1, z + 1)\)和\((x, x + 1, z + 1)\)是等价的 所以对于每个连边操作, 我们就变成了连一条边和一个环 考虑怎么优化环上的边的数量 对于这两条边\(
题目: 把一个字符串按照Z型排列后打印出来,例如 "PAYPALISHIRING" 重新排列后为3行,即 P A H N A P L S I I G Y I R 那么输出为"PAHNAPLSIIGYIR" 解法: 细节实现题,假如重新排列为5行,那么排列后的下标分布应该为 0 8 16 24 1 7 9 15 17 23 2 6 10 14 18 22 3 5 11 13 19 21 4 12 20 可以看出规律,输出为5行的时候,每两个完整列之间的
题目: The string "PAYPALISHIRING" is written in a zigzag pattern on a given number of rows like this: (you may want to display this pattern in a fixed font for better legibility) P A H N A P L S I I G Y I R And then read line by line: "PAHNAP
原题链接在这里:https://leetcode.com/problems/zigzag-iterator/ 题目: Given two 1d vectors, implement an iterator to return their elements alternately. For example, given two 1d vectors: v1 = [1, 2] v2 = [3, 4, 5, 6] By calling next repeatedly until hasNext ret
Binary Tree Zigzag Level Order Traversal Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). For example: Given binary tree {3,9,20,
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题目: Given two 1d vectors, implement an iterator to return their elements alternately. For example, given two 1d vectors: v1 = [1, 2] v2 = [3, 4, 5, 6] By calling next repeatedly until hasNext returns false, the order of elements returned by next shou
Zigzag Iterator Given two 1d vectors, implement an iterator to return their elements alternately. For example, given two 1d vectors: v1 = [1, 2] v2 = [3, 4, 5, 6] By calling next repeatedly until hasNext returns false, the order of elements returned
题目: Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). For example: Given binary tree {3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return