Add Soulution.go for 0014.Longest Common Prefix

Author: Yeqi Tao

solution/0014.Longest Common Prefix/Solution.go

@@ -0,0 +1,14 @@
+func longestCommonPrefix(strs []string) string {
+	result := ""
+	for i, v := range strs {
+		if i == 0 {
+			result = v
+		}
+		index := 0
+		for index < len(result) && index < len(v) && result[index] == v[index] {
+			index++
+		}
+		result = result[:index]
+	}
+	return result
+}