find prime number c++
#include <math.h>
// time: O(sqrt(n)) .. space: O(1)
bool isPrime(int n) {
if (n < 2) return false;
int iter = 2;
while(iter <= sqrt(n)) {
if (n % iter == 0) return false;
iter++;
}
return true;
}find prime number c++
#include <math.h>
// time: O(sqrt(n)) .. space: O(1)
bool isPrime(int n) {
if (n < 2) return false;
int iter = 2;
while(iter <= sqrt(n)) {
if (n % iter == 0) return false;
iter++;
}
return true;
}fast way to check if a number is prime C++
//O(sqrt(n))
bool isPrime(int num){
if(num <= 1) return false;
for(int i = 2; i <= sqrt(num); i++){
if(num % i == 0) return false;
}
return true;
}Copyright © 2021 Codeinu
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