Array swaping

Vipin Tyagi

12y2k

i have a array
{10,20,30,40,50 and so on}
and i want that this array be sorted in the form {20,10,40,30,60,50......}
how can i do this???
plz write the code i am unable to solve this.....

5 Replies

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Jignesh Trivedi12y ago
Accepted answer
hi,

try....

int[] a = new int[10] { 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };
int count = (a.Length / 2) - 1;
int swapDataIndex = 0;
for (var arrayData = 0; arrayData <= count; arrayData++)
{
    int dummyNo = a[swapDataIndex + 1];
    a[swapDataIndex + 1] = a[swapDataIndex];
    a[swapDataIndex] = dummyNo;
    swapDataIndex += 2;
}
foreach (var datainArray in a)
{
    Console.WriteLine(datainArray);
}

hope this will help you.
0
Vipin Tyagi12y ago
thanks Sir this code is very useful
0
Vulpes12y ago
You can also do this using LINQ:

int[] a = new int[10] { 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };

a = a.SelectMany((i, n) =>
{
if(n % 2 == 1)
return new int[]{i, a[n-1]};
else
return new int[0];
}).ToArray();

foreach (var i in a)
{
Console.Write("{0} ", i);
}

The output is:

20 10 40 30 60 50 80 70 100 90

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Vipin Tyagi12y ago
if there are 20 elements in an array
and we want to swap 1st element to 2nd ,3rd element with 4th 5th with 6 and so on.......
means if array is
1[0] index number
2[1]
3
4
5
6
7
8
9
10[9]
after swapping the element will be
2[0]index
1
4
3
6
5
8
7
10
9[9]index
0
Lakshmanan Sethu Sankaranarayan12y ago
Hi Vipin, What kind of Swapping do you want to implement?
0