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32 lines (32 loc) · 738 Bytes
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1370.cpp
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32 lines (32 loc) · 738 Bytes
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class Solution {
public:
string sortString(string s){
string res;
int n=s.length();
int count=0;
int ans[26];
for(int j=0;j<26;j++){
ans[j]=0;
}
for(int i=0;i<n;i++){
ans[ s[i]-'a' ]++;
}
while(count<n){
for(int i=0;i<26;i++){
if(ans[i]!=0){
res+=char(i+97);
ans[i]--;
count++;
}
}
for(int i=25;i>=0;i--){
if(ans[i]!=0){
res+=char(i+97);
ans[i]--;
count++;
}
}
}
return res;
}
};