mirror of
https://github.com/golang/go
synced 2024-11-12 07:10:22 -07:00
83 lines
1.1 KiB
Go
83 lines
1.1 KiB
Go
// $G $F.go && $L $F.$A && ./$A.out
|
|
|
|
// Copyright 2009 The Go Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package main
|
|
|
|
var a,b,c,d,e,f,g,h,i int;
|
|
|
|
func
|
|
printit()
|
|
{
|
|
println(a,b,c,d,e,f,g,h,i);
|
|
}
|
|
|
|
func
|
|
testit(permuteok bool) bool
|
|
{
|
|
if a+b+c+d+e+f+g+h+i != 45 {
|
|
print("sum does not add to 45\n");
|
|
printit();
|
|
return false;
|
|
}
|
|
return permuteok ||
|
|
a == 1 &&
|
|
b == 2 &&
|
|
c == 3 &&
|
|
d == 4 &&
|
|
e == 5 &&
|
|
f == 6 &&
|
|
g == 7 &&
|
|
h == 8 &&
|
|
i == 9;
|
|
}
|
|
|
|
func
|
|
swap(x, y int) (u, v int) {
|
|
return y, x
|
|
}
|
|
|
|
func
|
|
main()
|
|
{
|
|
a = 1;
|
|
b = 2;
|
|
c = 3;
|
|
d = 4;
|
|
e = 5;
|
|
f = 6;
|
|
g = 7;
|
|
h = 8;
|
|
i = 9;
|
|
|
|
if !testit(false) { panic("init val\n"); }
|
|
|
|
for z:=0; z<100; z++ {
|
|
a,b,c,d, e,f,g,h,i = b,c,d,a, i,e,f,g,h;
|
|
|
|
if !testit(z%20 != 19) {
|
|
print("on ", z, "th iteration\n");
|
|
printit();
|
|
panic();
|
|
}
|
|
}
|
|
|
|
if !testit(false) {
|
|
print("final val\n");
|
|
printit();
|
|
panic();
|
|
}
|
|
|
|
a, b = swap(1, 2);
|
|
if a != 2 || b != 1 {
|
|
panic("bad swap");
|
|
}
|
|
|
|
a, b = swap(swap(a, b));
|
|
if a != 2 || b != 1 {
|
|
panic("bad swap");
|
|
}
|
|
}
|