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leetcode题解:Valid Palindrome(判断回文)
题目:Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: P...
分类:其他好文   时间:2014-07-09 21:38:15    阅读次数:207
CTCI 2.4
Write code to partition a linked list around a value x, such that all nodes less than x come before all nodes greater than or equal to x.Use two addit...
分类:其他好文   时间:2014-07-09 17:44:36    阅读次数:159
CTCI 2.7
Implement a function to check if a linked list is a palindrome.Reverse the second half of the list and then compare it with the first half./* Assume t...
分类:其他好文   时间:2014-07-09 14:25:04    阅读次数:176
快速排序之算法导论实现
#include using namespace std; int partition(int *a,int p,int r) { int x=a[r]; int i=p-1;//note i important which is used for //storage the number smaller than flag x=a[r] for (int j=p;j<r;j++...
分类:其他好文   时间:2014-07-08 21:06:59    阅读次数:232
Cracking the Coding Interview Q2.7
检测链表是否是palindrome.思路1:翻转并比较。思路2:迭代。思路3:递归。 public static boolean isPalindrome(LinkedListNode head) { LinkedListNode fast = head; Link...
分类:其他好文   时间:2014-07-08 17:15:57    阅读次数:267
判断一个整数是否为回文数 Check if a number is palindrome
一种方法是先翻转当前数,然后把它和原数比较(略)另一种是递归方法,借用一个复制数,对原数递归,使之翻转,然后配合复制数比较package recursion; public class Check_if_a_number_is_palindrome { public static void main(String[] args) { int num = 121321; System....
分类:其他好文   时间:2014-07-08 17:13:55    阅读次数:188
POJ 1159 Palindrome
Palindrome Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 51518   Accepted: 17733 Description A palindrome is a symmetrical string, that is, a string read...
分类:其他好文   时间:2014-07-08 10:56:08    阅读次数:204
Leetcode Valid Palindrome
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana...
分类:其他好文   时间:2014-07-06 16:45:00    阅读次数:201
LeetCode——Palindrome Number
Determine whether an integer is a palindrome. Do this without extra space. Some hints: Could negative integers be palindromes? (ie, -1) If you are thinking of converting the integer to string...
分类:其他好文   时间:2014-07-05 10:44:29    阅读次数:227
sum over用法,以及与group by的区别
1、sum over用法 sum(col1) over(partition by col2 order by col3 ) 以上的函数可以理解为:按col2 进行分组(partition ),每组以col3 进行排序(order),并进行连续加总(sum) 表a,内容如下:    B   C  D   02 02 1   02 03 2   02 04 3   02 05...
分类:其他好文   时间:2014-07-04 07:09:15    阅读次数:503
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