站长工具ip地址查询,凡科网页版登陆入口,dede手机网站仿站,北京建站模板制作用字符数组ch来记录magazine每个字母出现频率#xff0c;用ransomNote的字母减去字符数组ch对应的字符出现频率#xff0c;如果该字符对应的频率小于0#xff0c;则不够#xff0c;无法组成ransomNote#xff01;
class Solution {
public:bool canConstruct(string rans…用字符数组ch来记录magazine每个字母出现频率用ransomNote的字母减去字符数组ch对应的字符出现频率如果该字符对应的频率小于0则不够无法组成ransomNote
class Solution {
public:bool canConstruct(string ransomNote, string magazine) {//unordered_mapchar,int umap;int ch[27];if(ransomNote.size()magazine.size()){return false;}for(const auto c:magazine){ch[c-a];}for(const auto c:ransomNote){--ch[c-a];if(ch[c-a]0){return false;}}return true;}
};
