从一个字符串数组里随机取值
我有一个字符串数组： string[5] list = {str1,str2,str3,str4,str5};
现在我想随机的从这个字符串里取值，各位有什么好的方法。
[解决办法]
不就是5个索引吗，random从0~4取随机值不就完了，然后访问list[index]
[解决办法]
能说得再明白一点吗？是随机取出列表中的任何几个串呢，还是说这些串里的随机一段？
[解决办法]
msdn代码
你把int部分的数除以你容器中元素个数，取余数就行了
// Example of the Random class constructors and Random.NextDouble( ) // method.using System;using System.Threading;public class RandomObjectDemo { // Generate random numbers from the specified Random object. static void RunIntNDoubleRandoms( Random randObj ) { // Generate the first six random integers. for( int j = 0; j < 6; j++ ) Console.Write( " {0,10} ", randObj.Next( ) ); Console.WriteLine( ); // Generate the first six random doubles. for( int j = 0; j < 6; j++ ) Console.Write( " {0:F8} ", randObj.NextDouble( ) ); Console.WriteLine( ); } // Create a Random object with the specified seed. static void FixedSeedRandoms( int seed ) { Console.WriteLine( "\nRandom numbers from a Random object with " + "seed = {0}:", seed ); Random fixRand = new Random( seed ); RunIntNDoubleRandoms( fixRand ); } // Create a random object with a timer-generated seed. static void AutoSeedRandoms( ) { // Wait to allow the timer to advance. Thread.Sleep( 1 ); Console.WriteLine( "\nRandom numbers from a Random object " + "with an auto-generated seed:" ); Random autoRand = new Random( ); RunIntNDoubleRandoms( autoRand ); } static void Main( ) { Console.WriteLine( "This example of the Random class constructors and " + "Random.NextDouble( ) \n" + "generates the following output.\n" ); Console.WriteLine( "Create Random objects, and then generate and " + "display six integers and \nsix doubles from each."); FixedSeedRandoms( 123 ); FixedSeedRandoms( 123 ); FixedSeedRandoms( 456 ); FixedSeedRandoms( 456 ); AutoSeedRandoms( ); AutoSeedRandoms( ); AutoSeedRandoms( ); }}/*This example of the Random class constructors and Random.NextDouble( )generates the following output.Create Random objects, and then generate and display six integers andsix doubles from each.Random numbers from a Random object with seed = 123: 2114319875 1949518561 1596751841 1742987178 1586516133 103755708 0.01700087 0.14935942 0.19470390 0.63008947 0.90976122 0.49519146Random numbers from a Random object with seed = 123: 2114319875 1949518561 1596751841 1742987178 1586516133 103755708 0.01700087 0.14935942 0.19470390 0.63008947 0.90976122 0.49519146Random numbers from a Random object with seed = 456: 2044805024 1323311594 1087799997 1907260840 179380355 120870348 0.21988117 0.21026556 0.39236514 0.42420498 0.24102703 0.47310170Random numbers from a Random object with seed = 456: 2044805024 1323311594 1087799997 1907260840 179380355 120870348 0.21988117 0.21026556 0.39236514 0.42420498 0.24102703 0.47310170Random numbers from a Random object with an auto-generated seed: 380213349 127379247 1969091178 1983029819 1963098450 1648433124 0.08824121 0.41249688 0.36445811 0.05637512 0.62702451 0.49595560Random numbers from a Random object with an auto-generated seed: 861793304 2133528783 1947358439 124230908 921262645 1087892791 0.56880819 0.42934091 0.60162512 0.74388610 0.99432979 0.30310005Random numbers from a Random object with an auto-generated seed: 1343373259 1992194672 1925625700 412915644 2026910487 527352458 0.04937517 0.44618494 0.83879212 0.43139707 0.36163507 0.11024451*/
[解决办法]
你只需随机产生list数组的索引就行了