Add Solution.go for 0058.Length of Last Word

Author: electricbubble

solution/0058.Length of Last Word/Solution.go

@@ -0,0 +1,18 @@
+func lengthOfLastWord(s string) int {
+	if len(s) == 0 {
+		return 0
+	}
+	space := []byte(" ")[0]
+	for len(s) != 0 && s[len(s)-1] == space {
+		s = s[:len(s)-1]
+	}
+	ret := 0
+	for i := len(s) - 1; i >= 0; i-- {
+		if s[i] != space {
+			ret++
+		} else {
+			return ret
+		}
+	}
+	return ret
+}