原文:[LeetCode] 266. Palindrome Permutation 回文全排列

Given a string, determine if a permutation of the string could form a palindrome. Example : Example : Example : Hint: Consider the palindromes of odd vs even length. What difference do you notice Cou ...

2016-02-27 17:29 3 7545 推薦指數:

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[LeetCode] Palindrome Permutation

Problem Description: Given a string, determine if a permutation of the string could form a palindrome. For example,"code" -> False, "aab" -> ...

Sat Aug 22 01:41:00 CST 2015 0 3955
[算法]——排列Permutation)以及next_permutation

排列(Arrangement),簡單講是從N個不同元素中取出M個,按照一定順序排成一列,通常用A(M,N)表示。當M=N時,稱為排列Permutation)。從數學角度講,排列的個數A(N,N)=(N)*(N-1)*...*2*1=N!,但從編程角度,如何獲取所有排列?那么就必須按照某種順序 ...

Sun Jan 08 09:25:00 CST 2017 1 19577
 
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