Data commit

Task/Longest-common-subsequence/Groovy/longest-common-subsequence.groovy

@@ -0,0 +1,23 @@
+def lcs(xstr, ystr) {
+    if (xstr == "" || ystr == "") {
+        return "";
+    }
+
+    def x = xstr[0];
+    def y = ystr[0];
+
+    def xs = xstr.size() > 1 ? xstr[1..-1] : "";
+    def ys = ystr.size() > 1 ? ystr[1..-1] : "";
+
+    if (x == y) {
+        return (x + lcs(xs, ys));
+    }
+
+    def lcs1 = lcs(xstr, ys);
+    def lcs2 = lcs(xs, ystr);
+
+    lcs1.size() > lcs2.size() ? lcs1 : lcs2;
+}
+
+println(lcs("1234", "1224533324"));
+println(lcs("thisisatest", "testing123testing"));