Answer Posted / vijay bhatia

string processString(string x, string y) {
string res = "";
int occuranceCount[26];
for(int i=0; i<26; i++) {
occuranceCount[i] = 0;
}
for(i=0; i<y.size(); i++) {
occuranceCount[y[i]-'a']++;
}
for(i=0; i<x.size(); i++) {
if (occuranceCount[x[i]-'a'] == 0) {
res += x[i];
}
}
return res;
}

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