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/*
* SYNOPSIS:
*
* # gcj -o gcd --main=gcd gcd.java
* # ./gcd 11 22 33 44 121
*
* # javac gcd.java
* # java gcd 11 22 33
*
*/
public class gcd
{
public static int gcd2(int a, int b) {
int c;
while (b != 0) {
c = b;
b = a % b;
a = c;
}
return a;
}
public static int gcdn(int [] a) {
int r = a[0];
for (int i = 1; i < a.length; i++)
r = gcd2(r, a[i]);
return r;
}
public static void main(String [] argv) {
if (argv.length == 0)
return;
int [] n = new int [argv.length];
for (int i = 0; i < argv.length; i++) {
n[i] = Integer.parseInt(argv[i]);
}
System.out.println(gcdn(n));
}
}
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