From 0e25a6e997936e467fa610b4eba4bc516572ea79 Mon Sep 17 00:00:00 2001
From: kaku <xiao_doubi9637@outlook.com>
Date: Mon, 31 Mar 2025 12:58:00 +0800
Subject: [PATCH] 2025-03-31-01

---
 技术/Go/算法相关.md | 131 ++++++++++++++++++++++++++++++++++----------
 1 file changed, 101 insertions(+), 30 deletions(-)

diff --git a/技术/Go/算法相关.md b/技术/Go/算法相关.md
index c259d15..abbca6b 100644
--- a/技术/Go/算法相关.md
+++ b/技术/Go/算法相关.md
@@ -370,6 +370,92 @@ func repeatedSubstringPattern(s string) bool {
 ~~~
 
 
+## 判断IP地址
+~~~ go
+import "strings"
+/**
+ * 验证IP地址
+ * @param IP string字符串 一个IP地址字符串
+ * @return string字符串
+*/
+func solve( IP string ) string {
+	if isIpv4(IP) {
+		return "IPv4"
+	}
+	if isIpv6(IP) {
+		return "IPv6"
+	}
+	return "Neither"
+}
+
+func isIpv4(ip string) bool {
+	//首先判断字符串是不是大于7（1.1.1.1），首尾不能是 . 
+	if len(ip) < 7 || ip[0] == '.' || ip[len(ip) - 1] == '.' {
+		return false 
+	}
+	//分割之后长度不能少于4 
+	strSlice := strings.Split(ip,".")
+	if len(strSlice) != 4 {
+		return false 
+	}
+	
+	for _, str := range strSlice {
+		k := len(str)
+		//开头不能是0 
+		// str  = []byte(str)
+		if k == 0  || str[0] == '0' && k > 1 || k > 3 {
+			return false 
+		}
+		
+		num := 0
+		
+		for i:=0;i<len(str);i++{
+			//必须是数字
+			c := str[i]
+			
+			if c < '0' || c > '9' {
+				return false 
+			}
+			num = num * 10 + int((c-'0'))
+			
+			//不能超过255
+			if num > 255 {
+				return false 
+			}
+		}
+	}
+	return true 
+}
+func isIpv6(ip string) bool {
+	//首先判断字符串是不是小于15（1.1.1.1），首尾不能是 . 
+	if len(ip) < 7 || ip[0] == '.' || ip[len(ip) - 1] == '.' {
+		return false 
+	}
+	strSlice := strings.Split(ip,":")
+	if len(strSlice) != 8 {
+		return false 
+	}
+	for _, str := range strSlice {
+		k := len(str)
+		//开头不能是0 
+		// str  = []byte(str)
+		if k == 0  || k > 4 {
+			return false 
+		}
+		for i:=0;i<len(str);i++{
+			c := string(str[i])
+			//必须是数字
+			if !((c <= "f" && c >=  "a") || (c <= "F" && c >= "A") || (c >= "0" && c <= "9")) {
+				return false 
+			}
+		}
+	}
+	return true 
+}
+
+
+~~~
+
 
 ## 快速排序
 
@@ -459,43 +545,28 @@ left, right := 0, len(nums)-1
 ## 字符串相加
 
 ```go
-func max(a, b int) int {
-	if a > b {
-		return a
-	}
-	return b
-}
-
-func addStrings(num1 string, num2 string) string {
-	buf := make([]byte, max(len(num1), len(num2)) + 1)
-	length := len(buf) - 1
+func solve(s string, t string) (ans string) {
+	buf := make([]byte, 0, max(len(s), len(t))+1)
 	add := 0
-	for i, j := len(num1)-1, len(num2)-1; j >= 0 || i >= 0; {
-		num := add
+	for i, j := len(s)-1, len(t)-1; i >= 0 || j >= 0; {
 		if i >= 0 {
-			num += int(num1[i] - '0') //转Int
+			add += int(s[i] - '0')
 			i--
 		}
 		if j >= 0 {
-			num += int(num2[j] - '0')
-            j--
+			add += int(t[j] - '0')
+			j--
 		}
-        if num >= 10 {
-            num %= 10
-            add = 1
-        } else {
-            add = 0
-        }
-        buf[length] = byte(num+'0')
-        length--
+		buf = append(buf, byte(add%10)+'0')
+		add /= 10
 	}
-    if add != 0 {
-        buf[length] = '1'
-    }
-    if buf[0]==0{
-        buf=buf[1:]
-    }
-    return string(buf)
+	if add > 0 {
+		buf = append(buf, byte(add)+'0')
+	}
+	for _, v := range buf {
+		ans = string(v) + ans
+	}
+	return ans
 }
 ```