Merge pull request manwar#1665 from Scimon/master

Bitwise XOR of course.
pip · May 4, 2020 · bd1cc9e · bd1cc9e
2 parents 49a15dc + 926adde
commit bd1cc9e
Showing 1 changed file with 2 additions and 4 deletions.
diff --git a/challenge-059/simon-proctor/raku/ch-2.raku b/challenge-059/simon-proctor/raku/ch-2.raku
@@ -2,12 +2,10 @@
 
 use v6;
 
-multi sub bit-diff( UInt $a, UInt $b where $a >= $b ) {
-    [+] ($a.base(2).comb.reverse Z (|$b.base(2).comb.reverse, |(lazy gather { take 0 }) ) ).map( { abs( $^a[0] - $^a[1] ) } );
+sub bit-diff( UInt $a, UInt $b ) {
+    [+] ($a +^ $b).base(2).comb;
 }
 
-multi sub bit-diff( UInt $a, UInt $b ) { bit-diff( $b, $a ) }
-
 #| Give the sum of the differences in bits between all the combinations of inputs
 sub MAIN (
     *@vals where { $_.all ~~ UInt } #= Integer values to combine