c# array

Question

ya i want these questions to be answered can u help me 1)Accept the names of 10 candidates and sort them alphabettically. 2)display a 4X4 identity matrises 3)product of 2x2 matrises

Vulpes · Answer

/* Problem 1 */ using System; using System.Collections; class Program { static void Main() { string[] names = new string[10]; Console.WriteLine("Please enter the names of 10 candidates
"); for(int i = 1; i { Console.Write(" {0,2} : ", i); names[i - 1] = Console.ReadLine(); } Array.Sort(names, new CaseInsensitiveComparer()); Console.WriteLine("
The candidates in alphabetical order are
"); for(int i = 1; i { Console.WriteLine(" {0,2} : {1}", i, names[i - 1]); } Console.ReadKey(); } } /* Problem 2 */ using System; class Program { static void Main() { Console.Write("Please enter the size of the identity matrix : "); int n = int.Parse(Console.ReadLine()); Console.WriteLine("
OK, here it is
"); int oneCol = 1; for(int i = 1; i { for(int j = 1; j { if (j == oneCol) Console.Write(" 1"); else Console.Write(" 0"); } Console.WriteLine(); oneCol++; } Console.ReadKey(); } } /* Problem 3 */ using System; class Program { static void Main() { Console.WriteLine("Please enter the elements of the first 2 x 2 matrix
"); double[,] a = FillMatrix(); Console.WriteLine("
Please enter the elements of the second 2 x 2 matrix
"); double[,] b = FillMatrix(); double[,] c = MatrixMultiply(a, b); Console.WriteLine("
The product of these matrices is
"); for(int i = 1; i { for(int j = 1; j { Console.Write("{0, 4}", c[i- 1, j-1]); } Console.WriteLine(); } Console.ReadKey(); } static double[,] FillMatrix() { double[,] m = new double[2, 2]; for(int i = 1; i { for(int j = 1; j { Console.Write("Row {0}, Col {1} : ", i, j); m[i - 1, j - 1] = double.Parse(Console.ReadLine()); } } return m; } static double[,] MatrixMultiply(double[,] m1, double[,] m2) { double[,] m3 = new double[2, 2]; m3[0,0] = m1[0,0] * m2[0,0] + m1[0,1] * m2[1,0]; m3[0,1] = m1[0,0] * m2[0,1] + m1[0,1] * m2[1,1]; m3[1,0] = m1[1,0] * m2[0,0] + m1[1,1] * m2[1,0]; m3[1,1] = m1[1,0] * m2[0,1] + m1[1,1] * m2[1,1]; return m3; } }

c# array

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