add new solutions

solutions/2/q242/solution.go

@@ -0,0 +1,21 @@
+package q242
+
+func isAnagram(s string, t string) bool {
+	if len(s) != len(t) {
+		return false
+	}
+	cnt := map[rune]int{}
+
+	for _, r := range s {
+		cnt[r]++
+	}
+	for _, r := range t {
+		cnt[r]--
+		if cnt[r] < 0 {
+			return false
+		}
+	}
+	return true
+}
+
+var _ = isAnagram