From 245127814655732a9eaac2d1bd9798092777da15 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E6=98=9F=E8=BE=B0?=
 <9159578+Liuxc_Mr@user.noreply.gitee.com>
Date: Fri, 22 Apr 2022 11:25:52 +0000
Subject: [PATCH] =?UTF-8?q?add=20homework/=E7=AC=AC=E4=B8=80=E5=91=A8/Go-8?=
 =?UTF-8?q?031/main.go.?=
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---
 .../Go-8031/main.go"                          | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 "homework/\347\254\254\344\270\200\345\221\250/Go-8031/main.go"

diff --git "a/homework/\347\254\254\344\270\200\345\221\250/Go-8031/main.go" "b/homework/\347\254\254\344\270\200\345\221\250/Go-8031/main.go"
new file mode 100644
index 0000000..87e65c1
--- /dev/null
+++ "b/homework/\347\254\254\344\270\200\345\221\250/Go-8031/main.go"
@@ -0,0 +1,31 @@
+package main
+
+import (
+	"fmt"
+	"math"
+	"strings"
+)
+
+//输出一个int32对应的二进制表示
+func BinaryFormat(n int32) string {
+	a := uint32(n)               //有符号转为无符号
+	sb := strings.Builder{}      //把多个短字符串拼接成一个长字符串
+	c := uint32(math.Pow(2, 31)) //最高位是1，其他位全是0
+
+	for i := 0; i < 32; i++ {
+		if a&c != 0 {
+			sb.WriteString("1") //往sb后面拼接“1”
+		} else {
+			sb.WriteString("0") //往sb后面拼接“0”
+		}
+		c >>= 1
+	}
+	return sb.String() //返回长度为32的字符串
+}
+
+func main() {
+	fmt.Println(BinaryFormat(2))
+	fmt.Println(BinaryFormat(-2))
+	fmt.Println(BinaryFormat(20))
+	fmt.Println(BinaryFormat(200))
+}
-- 
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