Longest common substring: Difference between revisions

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@@ Line 209: / Line 209: @@
 <lang zkl>fcn lcd(a,b){
    if(b.len()<a.len()){ t:=a; a=b; b=t; }
-   foreach n,m in ([a.len()..1,-1],a.len()){
+   foreach n,m in ([a.len()..1,-1],a.len()-n+1){
       s:=a[m,n];
-      if(s.len()==n and b.holds(s)) return(s);
+      if(b.holds(s)) return(s);
    }
+   ""
 }</lang>
 <lang zkl>lcd("testing123testing","thisisatest").println();</lang>