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Leetcode#5 Longest Palindromic Substring
原题地址最初的想法是用动态规划,令palin[i][j]表示s[i..j]是否是回文串,则有递推公式palin[i][j] = s[i] == s[j] && palin[i+1][j-1]。因为递推式只使用相邻层的值,所以编码的时候可以将二维状态数组压缩成一维的。代码: 1 string long...
分类:其他好文   时间:2015-01-30 17:03:05    阅读次数:105
General Palindromic Number (进制)
A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number...
分类:其他好文   时间:2015-01-28 14:24:46    阅读次数:110
LeetCode --- 5. Longest Palindromic Substring
题目链接:Longest Palindromic Substring Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic ...
分类:其他好文   时间:2015-01-27 23:35:02    阅读次数:144
leetcode_5_Longest Palindromic Substring
描述: Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 思路: 刚开始非常天...
分类:其他好文   时间:2015-01-27 20:21:30    阅读次数:205
LeetCode Longest Palindromic Substring 最长回文子串
Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring.(最长回文子串) 中心扩展法: pub...
分类:其他好文   时间:2015-01-27 18:31:08    阅读次数:151
leetcode-----------Longest Palindromic Substring
题目:Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. 下面是英文,祝你好运 ...
分类:其他好文   时间:2015-01-27 16:35:09    阅读次数:363
Longest Palindromic Substring
Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. #include #includ...
分类:其他好文   时间:2015-01-27 15:02:38    阅读次数:164
欧拉计划(python) problem 4
Largest palindrome product Problem 4 A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 × 99. Find the largest p...
分类:编程语言   时间:2015-01-27 09:34:40    阅读次数:223
[LeetCode] Longest Palindromic Substring
Given a stringS, find the longest palindromic substring inS. You may assume that the maximum length ofSis 1000, and there exists one unique longest pa...
分类:其他好文   时间:2015-01-25 11:03:14    阅读次数:129
Leetcode#5 Longest Palindromic Substring
原题地址以前可以用DP枚举所有回文串,但是Leetcode后来增加了几组大数据,用DP会超时。什么!用DP都超时了??那怎么办?答:二分法尝试可能的回文串长度,直到找到最大值需要注意的是,假设现在已经验证了长度为length的回文串不存在,传统的二分法就会去尝试长度为length/2的回文串是否存在...
分类:其他好文   时间:2015-01-24 19:57:26    阅读次数:127
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