reverse array

Question

Hi,

In the code below, an array is filled with variables. However, I would like to reverse the order in which the variables are entered and stored in the array. This code doesn't work. Any suggestions would be greatly appreciated.

diel_pos[0] = 0F; 
fillDielectricPosMicrostrip(layersArray, ref diel_pos);
Array.Reverse(diel_pos);  //April 23             
diel_const[0] = 1;
fillDielectricConst(layersArray, 1, ref diel_const);
Array.Reverse(diel_const);  //April 23

Naimish Makwana · Answer

The code you provided seems to be incomplete, as the implementation of the fillDielectricPosMicrostrip and fillDielectricConst methods are not shown. However, if you want to reverse the order of the elements in the diel_pos and diel_const arrays, the Array.Reverse method you're already using is the correct way to do it. Based on your code, it seems like you're already calling Array.Reverse on both arrays. However, keep in mind that this will reverse the order of all elements in the array, including the first element, which you've already assigned a specific value to ( diel_pos[0] = 0F; diel_const[0] = 1; ). If you want to reverse the order of the elements in the array while keeping the first element unchanged, you can modify your code as follows: diel_pos[0] = 0F; fillDielectricPosMicrostrip(layersArray, ref diel_pos); Array.Reverse(diel_pos, 1, diel_pos.Length - 1); diel_const[0] = 1; fillDielectricConst(layersArray, 1, ref diel_const); Array.Reverse(diel_const, 1, diel_const.Length - 1); Here, we're passing additional parameters to the Array.Reverse method to indicate that we only want to reverse the elements starting from the second element ( 1 ) and up to the end of the array ( diel_pos.Length - 1 ). This way, the first element of the array will remain unchanged. Note that if the length of the array is odd, the middle element will be swapped with itself when reversing the array.

Barry Olney · Answer

Thanks Naimish, that helps. I did want to keep the first element of the array unchanged.