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branch: master
@Blei Blei
43 lines (37 sloc) 0.572 kB
import printer.(println);
factorial1(n) {
if (n == 0)
return 1;
return n*factorial1(n-1);
}
factorial2(n) {
var p = 1;
again :
if (n == 0)
return p;
p *: n;
n -: 1;
goto again;
}
factorial3(n) {
var p = 1;
while (true) {
if (n == 0) break;
p *: n;
n -: 1;
}
return p;
}
factorial4(n) {
var p = 1;
for (i in range(n))
p *: i+1;
return p;
}
main() {
var n = 7;
n -: 1;
var f = factorial4(n);
println("factorial(", n, ") = ", f);
return 0;
}
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