1 using System; 2 using System.Collections.Generic; 3 using System.Drawing; 4 using System.Linq; 5 using System.Text; 6 using System.Threading.Tasks; 7 8 namespace DFT 9 { 10 class FFT 11 { 12 int row; 13 int col; 14 double[,] FM; 15 double[,] FN; 16