Initial commit

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-11-07 10:47:18 +08:00
commit 79ac89b458
708 changed files with 151634 additions and 0 deletions
@@ -0,0 +1,68 @@
+package maths
+
+import (
+	"math/big"
+	"strings"
+
+	uuid "github.com/satori/go.uuid"
+)
+
+const CODE62 = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
+const CodeLenth = 62
+
+/**
+ * 10进制 为 62进制 字符串。大数字类型
+ *
+ * param: *big.Int number 待转换的数字，非常大的
+ * return: string
+ */
+func From10To62Big(number *big.Int) string {
+	tmpNumber := big.NewInt(0)
+	var result []byte
+	for number.Cmp(big.NewInt(0)) != 0 {
+		var tmp []byte
+		tmpNumber.Rem(number, big.NewInt(CodeLenth))
+		tmp = append(tmp, CODE62[tmpNumber.Int64()])
+		result = append(tmp, result...)
+		number.Div(number, big.NewInt(CodeLenth))
+	}
+	return string(result)
+}
+
+/**
+ * 10进制 为 62进制 字符串。大数字类型
+ *
+ * param: int64 num 待转换的数字
+ * return: string
+ */
+func From10To62(number int64) string {
+	var result []byte
+	for number != 0 {
+		var tmp []byte
+		number1 := number % CodeLenth
+		tmp = append(tmp, CODE62[number1])
+		result = append(tmp, result...)
+		number = number / CodeLenth
+	}
+	return string(result)
+}
+
+func GenUUID() string {
+	u1 := uuid.Must(uuid.NewV4(), nil).String()
+	uuidStr := strings.Replace(u1, "-", "", -1)
+	number, _ := new(big.Int).SetString(uuidStr, 16)
+	return From10To62Big(number)
+}
+
+func Abs(n int64) int64 {
+	if n < 0 {
+		return -n
+	}
+	return n
+}
+
+func Gen32String() string {
+	u1 := uuid.Must(uuid.NewV4(), nil).String()
+	uuidStr := strings.Replace(u1, "-", "", -1)
+	return uuidStr
+}