9 lines
167 B
Text
9 lines
167 B
Text
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fcn lcd(a,b){
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if(b.len()<a.len()){ t:=a; a=b; b=t; }
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foreach n,m in ([a.len()..1,-1],a.len()-n+1){
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s:=a[m,n];
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if(b.holds(s)) return(s);
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}
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""
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}
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