blob: d8a512a983fe10b4f68c693d25d5dae54c21d4d7 [file] [log] [blame]
// Copyright 2011 Google Inc. All Rights Reserved.
class Fibonacci {
static int fibonacci(int n) {
if (n == 0) {
return 0;
}
int x = 1;
int y = 1;
for (int i = 3; i <= n; i++) {
int z = x + y;
x = y;
y = z;
}
return y;
}
public static void main(String[] args) {
try {
if (args.length == 1) {
int x = Integer.parseInt(args[0]);
int y = fibonacci(x); /* to warm up cache */
System.out.printf("fibonacci(%d)=%d\n", x, y);
y = fibonacci(x + 1);
System.out.printf("fibonacci(%d)=%d\n", x + 1, y);
}
} catch (NumberFormatException ex) {}
}
}