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383.cpp
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383.cpp
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__________________________________________________________________________________________________
sample 8 ms submission
static int x=[](){
std::ios::sync_with_stdio(false);
cin.tie(NULL);
return 0;
}();
class Solution {
public:
bool canConstruct(string ransomNote, string magazine) {
vector<int> counts(128, 0);
for (const char c : magazine)
++counts[c];
for (const char c : ransomNote)
if (--counts[c] < 0) return false;
return true;
}
};
__________________________________________________________________________________________________
sample 10748 kb submission
class Solution {
public:
bool canConstruct(string ransomNote, string magazine) {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int count[128]={0};
if(ransomNote.size()>magazine.size()) return false;
for(int i=0;i<magazine.size();i++) count[magazine[i]]++;
for(int i=0;i<ransomNote.size();i++) count[ransomNote[i]]--;
for(int i=0;i<128;i++) if(count[i]<0) return false;
return true;
}
bool canConstruct1(string ransomNote, string magazine) {
vector<int> count(128, 0);
for (const auto& c : magazine) {
count[c]++;
}
for (const auto& i : ransomNote) {
if (count[i] == 0) return false;
count[i]--;
}
return true;
}
};
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