LeetCode Count and Say

The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, …

1is read off as"one 1"or11.11is read off as"two 1s"or21.21is read off as"one 2, thenone 1"or1211.

Given an integern, generate thenthsequence.

Note: The sequence of integers will be represented as a string.

题意:统计上一个字符串中连续相同的字符的长度,,求第n个

思路:单纯的模拟

class Solution {public:string countAndSay(int n) {string ans = "1";for (int i = 1; i < n; i++) {int count = 1;string tmp = "";for (int j = 1; j < ans.size(); j++) {if (ans[j] == ans[j-1]) {count++;} else {tmp = tmp + (char)(count + '0') + ans[j-1];count = 1;}}ans = tmp + (char)(count + '0') + ans[ans.size()-1];}return ans;}};

寂寞的人总是记住生命中出现的每一个人,

LeetCode Count and Say

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