diff --git a/work20220401/neoString/CString.cpp b/work20220401/neoString/CString.cpp
index 3aa1b71..45c6f7d 100644
--- a/work20220401/neoString/CString.cpp
+++ b/work20220401/neoString/CString.cpp
@@ -3,6 +3,8 @@
 //
 
 #include <cstring>
+#include <algorithm>
+
 #include "CString.h"
 
 /*
@@ -40,7 +42,7 @@ bool CString::operator==(const CString &source) const {
     }
 
     // 以上情况都不符合时才进行逐字比较
-    int compareLength = source.length < length ? source.length : length;
+    int compareLength = std::min(source.length, length);
     for (int i = 0; i < compareLength; ++i) {
         if (data[i] != source.data[i]) {
             return false;
@@ -107,17 +109,13 @@ CString::CString(const CString &source) : CString(source.data, source.length) {}
  * 按照字典顺序逐字对比
  */
 bool CString::operator<(const CString &source) const {
-    // 这部分类似于前边==重载的前置判断
-    if (source.length != length || data == nullptr) {
+    // 这部分类似于前边==重载的前置判断，如果本对象数据为null或者两对象数据是一回事就直接false
+    if (data == nullptr || (source.length != length && source.data == data)) {
         return false;
-    } else {
-        if (source.data == data) {
-            return true;
-        }
     }
 
     // 以上情况都不符合时才进行逐字比较
-    int compareLength = source.length < length ? source.length : length;
+    int compareLength = std::min(source.length, length);
     for (int i = 0; i < compareLength; ++i) {
         if (data[i] < source.data[i]) {
             return true;