Update all new Tasks

Task/ABC-Problem/Go/abc-problem.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"fmt"
+	"strings"
+)
+
+func newSpeller(blocks string) func(string) bool {
+	bl := strings.Fields(blocks)
+	return func(word string) bool {
+		return r(word, bl)
+	}
+}
+
+func r(word string, bl []string) bool {
+	if word == "" {
+		return true
+	}
+	c := word[0] | 32
+	for i, b := range bl {
+		if c == b[0]|32 || c == b[1]|32 {
+			bl[i], bl[0] = bl[0], b
+			if r(word[1:], bl[1:]) == true {
+				return true
+			}
+			bl[i], bl[0] = bl[0], bl[i]
+		}
+	}
+	return false
+}
+
+func main() {
+	sp := newSpeller(
+		"BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM")
+	for _, word := range []string{
+		"A", "BARK", "BOOK", "TREAT", "COMMON", "SQUAD", "CONFUSE"} {
+		fmt.Println(word, sp(word))
+	}
+}