함수 gcd()

1 PHP

PHP gcd() 문서를 참고하십시오.

echo gmp_gcd(12, 21) . "\n";
# 3
var_dump( gmp_gcd(12, 21) );
# object(GMP)#1 (1) {
#   ["num"]=>
#   string(1) "3"
# }

function gcd($a, $b) { return $b ? gcd($b, $a%$b) : $a; }
var_dump( gcd(12, 21) );
var_dump( gcd(20, 8) );
# int(3)
# int(4)

function gcd($a, $b) { return ($a%$b) ? gcd($b,$a%$b) : $b; }
var_dump( gcd(12, 21) );
var_dump( gcd(20, 8) );
# int(3)
# int(4)

2 Python

Python gcd() 문서를 참고하십시오.

from fractions import gcd
print( gcd(12,21) )
# 3
print( gcd(20,8) )
# 4

def gcd(a,b):
    while b > 0:
        a, b = b, a % b
    return a

print( gcd(12,21) )
# 3
print( gcd(20,8) )
# 4

3 같이 보기

• 최대공약수