prime numbers
public class Prime {
public static void main(String[] args) {
int num = 29;
boolean flag = false;
for(int i = 2; i <= num/2; ++i){
if(num % i == 0){
flag = true;
break;
}
}
if (!flag)
System.out.println(num + " is a prime number.");
else
System.out.println(num + " is not a prime number.");
}}Prime Number
Numbers -- Prime Number
Write a method that can check if a number is prime or not
Solution:
public static boolean primeNumber(int num) {
if(num <= 1){
return false;
}
for(int i = 2; i < num; i++) {
if(num % i == 0) {
return false;
}
}
return true;
}prime number
def is_prime(n):
if(n<0):
print("n is not a nature number!")
return False
for i in range(1,ceil(n/2)+1):
if (i != n and i != 1 and n%i == 0):
return False
return True
print(is_prime(int(input("number>>"))))prime numbers
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41,
43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97 ...prime numbers
function isPrime(num) {
if(num <= 2){
return num + " is not prime"
}
for(let i = 2; i < num; i++){
if(num % i == 0){
return num + " is not prime"
}
}
return num + " is prime"
}
console.log(isPrime(4))
console.log(isPrime(6))
console.log(isPrime(0))
console.log(isPrime(-9))
console.log(isPrime(43))
console.log(isPrime(-2))
console.log(isPrime(-1))Copyright © 2021 Codeinu
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