Const n = 50; // количество чиселvar k: array [1..n] of integer; i, j, n1, n2, minr, a, b: integer; begin writeln(n, ' ', ': d'); a : = random(1000); b : = random(1000); minr : = 10000; for i : = 1 to n do k[i] : = a + random(b); for i : = 1 to n do for j : = 1 to n do if ((abs(k[i] - k[j])) < minr) and (k[i] < > k[j]) then begin minr : = abs(k[i] - k[j]); n1 : = i; n2 : = j; end; writeln(n1, ' ', n2); end.
using System;
class Program
{
static void Main()
{
int x1 = 2, y1 = 1;
int x2 = 6, y2 = 5;
int x3 = 10, y3 = 1;
var a = Distance(x2, y2, x3, y3);
var b = Distance(x1, y1, x3, y3);
var c = Distance(x2, y2, x1, y1);
Console.WriteLine("S = {0}", Square(a, b, c));
Console.ReadKey();
}
//растояние между точками
static double Distance(int x1, int y1, int x2, int y2)
{
return Math.Sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1));
}
//формула герона
static double Square(double a, double b, double c)
{
var p = (a + b + c) / 2;
return Math.Sqrt(p * (p - a) * (p - b) * (p - c));
}
// теорема косинусов
static double Angle(double a, double b, double c)
{
return Math.Acos((b * b + c * c - a * a) / (2 * b * c));
}
static bool IsAcuteAngel(double alpha)
{
return alpha < Math.PI / 2;
}
}