反转数组中的元素 [英] Reverse elements in an array
本文介绍了反转数组中的元素的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我设置了一个数组,我想创建一个方法,该方法将返回一个包含反向元素的数组.例如如果有 10 个插槽,则 array1[9] = 6
那么array2[0] = 6
.
我想我必须返回一个数组 - 我该怎么做?
而且我不知道如何反转并添加到另一个数组中.
谢谢!
I setup an array and i would like to create a method that will return an array with the elements in reverse. e.g. if there are 10 slots then array1[9] = 6
so then array2[0] = 6
.
I suppose i have to return an array - how would i do that?
And i dont know how to reverse and add to another array.
Thank you!
int[] arr = {43, 22, 1, 44, 90, 38, 55, 32, 31, 9};
Console.WriteLine("Before");
PrintArray(arr);
Console.WriteLine("After");
Reverse(arr);
Console.ReadKey(true);
}
static int[] Reverse(int[] array)
{
for (int i = array.Length; i < 1; i--)
{
int x = 0;
array[i] = array[x++];
Console.WriteLine(array[i]);
}
}
static void PrintArray(int[] array)
{
for (int j = 0; j < array.Length; j++)
{
Console.Write(array[j] + " ");
}
Console.WriteLine("");
推荐答案
您可以使用 Array.Reverse
上面的例子
public static void Main() {
// Creates and initializes a new Array.
Array myArray=Array.CreateInstance( typeof(String), 9 );
myArray.SetValue( "The", 0 );
myArray.SetValue( "quick", 1 );
myArray.SetValue( "brown", 2 );
myArray.SetValue( "fox", 3 );
myArray.SetValue( "jumps", 4 );
myArray.SetValue( "over", 5 );
myArray.SetValue( "the", 6 );
myArray.SetValue( "lazy", 7 );
myArray.SetValue( "dog", 8 );
// Displays the values of the Array.
Console.WriteLine( "The Array initially contains the following values:" );
PrintIndexAndValues( myArray );
// Reverses the sort of the values of the Array.
Array.Reverse( myArray );
// Displays the values of the Array.
Console.WriteLine( "After reversing:" );
PrintIndexAndValues( myArray );
}
public static void PrintIndexAndValues( Array myArray ) {
for ( int i = myArray.GetLowerBound(0); i <= myArray.GetUpperBound(0); i++ )
Console.WriteLine( "\t[{0}]:\t{1}", i, myArray.GetValue( i ) );
}
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