Data commit

Task/Longest-common-substring/Kotlin/longest-common-substring.kotlin

@@ -0,0 +1,18 @@
+// version 1.1.2
+
+fun lcs(a: String, b: String): String {
+    if (a.length > b.length) return lcs(b, a)
+    var res = ""
+    for (ai in 0 until a.length) {
+        for (len in a.length - ai downTo 1) {
+            for (bi in 0 until b.length - len) {
+                if (a.regionMatches(ai, b, bi,len) && len > res.length) {
+                    res = a.substring(ai, ai + len)
+                }
+            }
+        }
+    }
+    return res
+}
+
+fun main(args: Array<String>) = println(lcs("testing123testing", "thisisatest"))