6 lines
187 B
Text
6 lines
187 B
Text
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fcn lcs(a,b){
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if(not a or not b) return("");
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if (a[0]==b[0]) return(a[0] + self.fcn(a[1,*],b[1,*]));
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return(fcn(x,y){if(x.len()>y.len())x else y}(lcs(a,b[1,*]),lcs(a[1,*],b)))
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}
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