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Task/Rep-string/Go/rep-string.go

@@ -0,0 +1,38 @@
+package main
+
+import (
+    "fmt"
+    "strings"
+)
+
+func rep(s string) int {
+    for x := len(s) / 2; x > 0; x-- {
+        if strings.HasPrefix(s, s[x:]) {
+            return x
+        }
+    }
+    return 0
+}
+
+const m = `
+1001110011
+1110111011
+0010010010
+1010101010
+1111111111
+0100101101
+0100100
+101
+11
+00
+1`
+
+func main() {
+    for _, s := range strings.Fields(m) {
+        if n := rep(s); n > 0 {
+            fmt.Printf("%q  %d rep-string %q\n", s, n, s[:n])
+        } else {
+            fmt.Printf("%q  not a rep-string\n", s)
+        }
+    }
+}