Data commit

Task/Longest-common-substring/Go/longest-common-substring.go

@@ -0,0 +1,28 @@
+package main
+
+import "fmt"
+
+func lcs(a, b string) (output string) {
+    lengths := make([]int, len(a)*len(b))
+    greatestLength := 0
+    for i, x := range a {
+        for j, y := range b {
+            if x == y {
+                if i == 0 || j == 0 {
+                    lengths[i*len(b)+j] = 1
+                } else {
+                    lengths[i*len(b)+j] = lengths[(i-1)*len(b)+j-1] + 1
+                }
+                if lengths[i*len(b)+j] > greatestLength {
+                    greatestLength = lengths[i*len(b)+j]
+                    output = a[i-greatestLength+1 : i+1]
+                }
+            }
+        }
+    }
+    return
+}
+
+func main() {
+    fmt.Println(lcs("thisisatest", "testing123testing"))
+}