Add RandomHelper

EasyTool.Core/RandomCategoty/RandomExtension.cs

@@ -0,0 +1,33 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace EasyTool.RandomCategoty
+{
+    public static class RandomExtension
+    {
+        /// <summary>
+        /// 返回位数区间内的数字字符串
+        /// <para></para>
+        /// 左闭右开
+        /// </summary>
+        /// <param name="minBit">最小位数</param>
+        /// <param name="maxBit">最大位数</param>
+        /// <returns></returns>
+        /// <exception cref="NotSupportedException">当<see cref="minBit"/><=0，抛出异常</exception>
+        /// <exception cref="NotSupportedException">当<see cref="maxBit"/><=0，抛出异常</exception>
+        public static string RandomNum(this Tuple<int, int> tuple) => RandomUtil.RandomNum(tuple.Item1, tuple.Item2);
+
+        /// <summary>
+        /// 返回区间内指定个数随机数
+        /// 左闭右开
+        /// </summary>
+        /// <param name="minValue"></param>
+        /// <param name="maxValue"></param>
+        /// <param name="refCount">输出数量</param>
+        /// <returns></returns>
+        /// <exception cref="NotSupportedException">当<see cref="refCount"/><0，抛出异常</exception>
+        public static List<int> RandomNum(this Tuple<int, int,int> tuple) => RandomUtil.RandomNum(tuple.Item1, tuple.Item2,tuple.Item3);
+
+    }
+}

EasyTool.Core/RandomCategoty/RandomUtil.cs

@@ -0,0 +1,75 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace EasyTool.RandomCategoty
+{
+    public static class RandomUtil
+    {
+        private static readonly Random _random = new();
+        /// <summary>
+        /// 返回四位数的正整数字符串
+        /// </summary>
+        /// <returns></returns>
+        public static string FourNum()
+        {
+            return _random.Next(1000, 10000).ToString();
+        }
+        /// <summary>
+        /// 返回六位数的正整数字符串
+        /// </summary>
+        /// <returns></returns>
+        public static string SixNum()
+        {
+            return _random.Next(1000000, 10000000).ToString();
+        }
+        /// <summary>
+        /// 返回位数区间内的数字字符串
+        /// <para></para>
+        /// 左闭右开
+        /// </summary>
+        /// <param name="minBit">最小位数</param>
+        /// <param name="maxBit">最大位数</param>
+        /// <returns></returns>
+        /// <exception cref="NotSupportedException">当<see cref="minBit"/><=0，抛出异常</exception>
+        /// <exception cref="NotSupportedException">当<see cref="maxBit"/><=0，抛出异常</exception>
+        public static string RandomNum(int minBit, int maxBit)
+        {
+            if (minBit <= 0)
+            {
+                throw new NotSupportedException("minBit参数错误");
+            }
+            if (maxBit <= 0)
+            {
+                throw new NotSupportedException("maxBit参数错误");
+            }
+            int minValue = (int)Math.Pow(10, minBit);
+            int maxValue = (int)Math.Pow(10, maxBit);
+            return _random.Next(minValue, maxValue).ToString();
+        }
+
+        /// <summary>
+        /// 返回区间内指定个数随机数
+        /// 左闭右开
+        /// </summary>
+        /// <param name="minValue"></param>
+        /// <param name="maxValue"></param>
+        /// <param name="refCount">输出数量</param>
+        /// <exception cref="NotSupportedException">当<see cref="refCount"/><0，抛出异常</exception>
+        public static List<int> RandomNum(int minValue, int maxValue, int refCount)
+        {
+            var result = new List<int>();
+            if (refCount < 0)
+            {
+                throw new NotSupportedException("refCount参数错误");
+            }
+            for (int i = 0; i < refCount; i++)
+            {
+                result.Add(_random.Next(minValue, maxValue));
+            }
+
+            return result;
+        }
+
+    }
+}