check if map contains key java
if (map.containsKey(key)) {
// Okay, there's a key but the value is null
} else {
// Definitely no such key
}check if map contains key java
if (map.containsKey(key)) {
// Okay, there's a key but the value is null
} else {
// Definitely no such key
}check if map key has alue cpp
#include<map>
int main(){
map<int,char> m;
char ch = '!';
if (m.find(ch) != m.end()) {
std::cout << "Key found";
} else {
std::cout << "Key not found";
}
return 0;
}Copyright © 2021 Codeinu
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