标签：code reason oid solution tle int letter param case
Given a string which contains only letters. Sort it by lower case first and upper case second.
It‘s NOT necessary to keep the original order of lower-case letters and upper case letters.
Example
For "abAcD", a reasonable answer is "acbAD"
Solution
小写指针前进begin++，大写则换不前进，末尾指针end--。
1 class Solution { 2 public: 3 /** 4 * @param chars: The letters array you should sort. 5 */ 6 void sortLetters(string &letters) { 7 // write your code here 8 int begin = 0, end = letters.size()-1; 9 while(begin<=end){ 10 if(isupper(letters[begin])){ 11 char temp = letters[begin]; 12 letters[begin] = letters[end]; 13 letters[end] = temp; 14 end--; 15 } 16 if(islower(letters[begin])) 17 begin++; 18 } 19 } 20 };
Lintcode 49 Sort Letters by Case
标签：code reason oid solution tle int letter param case
原文地址：http://www.cnblogs.com/pdu1988/p/7194198.html
