ranged query kth character in list of strings
for(int i=0;i<words.size();i++){
for(char ch : words[i]){
mat[i][ch-'a']++;
}
}ranged query kth character in list of strings
for(int i=0;i<words.size();i++){
for(char ch : words[i]){
mat[i][ch-'a']++;
}
}ranged query kth character in list of strings
char determine_character(vector<string> words, int l, int r, int k){
int sum=0;
for(int i=0;i<26;i++){
for(int j= l-1;j<=r-1;j++)
sum += mat[j][i];
if(sum>=k)
return 'a' + i;
}
return 'z';
}Copyright © 2021 Codeinu
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