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/*
* SYNOPSIS:
*
* # javac gcd.java
* # java gcd 11 22 33
*
*/
public class gcd {
public static long gcd2(long a, long b) {
long c;
while (b != 0) {
c = b;
b = a % b;
a = c;
}
return a;
}
public static long gcdn(long[] a) {
long 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;
long[] n = new long[argv.length];
for (int i = 0; i < argv.length; i++) {
n[i] = Long.parseLong(argv[i]);
}
System.out.println(gcdn(n));
}
}
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