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LeetCode – Refresh – Binary Tree Level Order Traversal ii
This question is almost same as the previous one.I just use a stack (another vector) of vector to store the level result. Then reverse it. 1 /** 2 * ....
分类:其他好文   时间:2015-03-18 08:56:41    阅读次数:155
[LeetCode] Evaluate Reverse Polish Notation stack 栈
Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another express...
分类:其他好文   时间:2015-03-18 01:09:26    阅读次数:160
[LeetCode]Evaluate Reverse Polish Notation
Evaluate the value of an arithmetic expression in Reverse Polish Notation. Valid operators are +, -, *, /. Each operand may be an integer or another expression. Some examples: [“2...
分类:其他好文   时间:2015-03-17 21:56:20    阅读次数:160
Reverse Bits
Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as00000010100101000001111010011100), return ...
分类:其他好文   时间:2015-03-17 21:45:00    阅读次数:103
【leetcode】Reverse Bits(middle)
Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as00000010100101000001111010011100), return ...
分类:其他好文   时间:2015-03-17 19:27:15    阅读次数:111
leetcode题解||Reverse Integer 问题
problem: Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321 thinking: (1)整型反转直观很容易理解。如正负,尾数为0等问题还好处理。 (2)反转溢出问题要仔细处理。 code: class Solution { public: ...
分类:其他好文   时间:2015-03-17 18:04:05    阅读次数:132
翻转句子中单词的顺序
题目:输入一个英文句子,翻转句子中单词的顺序,但单词内字符的顺序不变。句子中单词以空格符隔开。为简单起见,标点符号和普通字母一样处理。例如输入“I am a student.”,则输出“student. a am I”。 分析:先颠倒句子中的所有字符,再颠倒每个单词内的字符。由于单词内的字符被翻转两次,因此顺序仍然和输入时的顺序保持一致。 void Reverse(char *pBegi...
分类:其他好文   时间:2015-03-17 14:19:07    阅读次数:177
手摇算法
如何实现字符串倒置呢,直接用头尾两个指针从两边向中间扫,并且不断交换两个指针的内容, void reverse(int a[], int n){ if(n < 2) return; for(int i = 0; i <= n;) swap(a[i++], a[--n]); }  然后,如果要实现字符串反转呢,比如,有字符串abcdefg,假设要将前n个字符与剩下的字符串交换位置...
分类:编程语言   时间:2015-03-17 00:54:17    阅读次数:202
[LeetCode] Reverse Bits
Reverse bits of a given 32 bits unsigned integer.For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as 00111001011110...
分类:其他好文   时间:2015-03-16 23:16:55    阅读次数:331
Leetcode: Reverse Integer
class Solution {public: int reverse(int x) { int flag = 1; long long x1 = x; if(x1 0 && result > 2147483647) return 0; ...
分类:其他好文   时间:2015-03-16 20:55:58    阅读次数:108
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