1: string countAndSay(int n) {2: // Start typing your C/C++ solution below3: // DO NOT write int main() function4: string seq = "1";5: int it = 1;6: while(it<n)7: {8: stringstream newSeq;9: char last = seq[0];10: int count =0;11: for(int i =0; i<= seq.si...
C++演示样例代码: classSolution{public://依据当前的number计算下一个numberstringcountNext(stringnumber) {string::size_type length =number.length(); size_t count =1;//记录同样数字的个数size_t index =0;//遍历number的伪指针char curnum;//暂时保存当前的数字stringresult;//终于结果//这层循环控制对...
代码如下: classSolution { public:stringcountAndSay(intn) {if(n <=0)return"";stringres ="1";while(--n) {stringcur ="";for(inti =0; i < res.size(); ++i) {intcnt =1;while(i +1< res.size() && res[i] == res[i +1]) {++cnt;++i; } cur+= to_string(cnt) +res[i]...
首先这个题目肯定要用递归来实现,所以: classSolution:defcountAndSay(self,n):""":type n: int:rtype: str"""ifn<=1:return'1'defcount(s,last=''):ifs=='':returnlastc=s[0]forrinrange(1,3):if(r>=len(s))or(s[r]!=c):breakelse:r+=1returncount(s[r:],last+'%d%s'%(r,c))r...
【leetcode】38-Count and Say problem Count and Say xiangjian Look-and-say sequence https:///wiki/Look-and-say_sequence code class Solution { public: string countAndSay(int n) { if(n<1) return "";
class Solution(object): def countAndSay(self, n): """ :type n: int :rtype: str """ """ 1=>1 """ k = "1" def say(m): # greedy ans = "" c = 1 for i in xrange(1, len(m)): if m[i] == m[i-1]: c += 1 ...
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1. Description Count and Say 2. Solution class Solution{public:stringcountAndSay(intn){if(n==1){return"1";}string result;string current="1";for(inti=1;i<n;i++){result=statistic(current);current=result;}returnresult;}private:stringstatistic(string s){string result;intcount=1;charcurrent...
leetcode 38 Count and Say 38 Count and Say 36.20% 外观序列,后一个数字等于前一个数字的元素重复个数+元素本身 正则表达式pattern re模块函数: re.sub()替换,re.match()匹配,re.search()查找,re.group()分组, re.split()切分 lambda(): 创建匿名函数,返回一个lambda对象。lambda......
class Solution { public: int countPrimes(int n) { vector<bool> mp(n, 0); int res = 0; for(int i = 2 ; i < n triplebee 2018/01/12 4130 LeetCode笔记:204. Count Primes javanumbers 我们知道最简单的质数就是2,3,5。。。那怎么计算往后的质数呢?质数的定义是除了自己以外没有任何因子,...