add new solutions

solutions/3/q383/solution.go

@@ -0,0 +1,25 @@
+package q383
+
+func canConstruct(ransomNote string, magazine string) bool {
+	counts := make([]int, 'z'-'a'+1)
+
+	for _, c := range magazine {
+		if c < 'a' || c > 'z' {
+			continue
+		}
+		counts[int(c)-int('a')]++
+	}
+	for _, c := range ransomNote {
+		if c < 'a' || c > 'z' {
+			continue
+		}
+		offset := int(c) - int('a')
+		counts[offset]--
+		if counts[offset] < 0 {
+			return false
+		}
+	}
+	return true
+}
+
+var _ = canConstruct