线性规划问题:
max=3x1+2x2
x1+2x2<=5
2x1+x2<=4
4x1+3x2<=9
x1>=0
x2>=0
正确的结果:x1=1.5; x2=1, max z=6.5

            Random random1  = new Random(DateTime.Now.Millisecond);Random random2 = new Random(DateTime.Now.Millisecond*DateTime.Now.Millisecond);double max=-9999,x1=0,x2=0,resultX1=0,resultX2=0;for (int i = 0; i < 654321; i++){if (random1.Next(0, 100) % 2 == 0){x1 = resultX1 + random1.NextDouble();}else{x1 = resultX1 - random1.NextDouble();}if (random2.Next(0, 100) % 2 == 0){x2 = resultX2 + random2.NextDouble();}else{x2 = resultX2 - random2.NextDouble();}if (x1 + 2 * x2 <= 5 && 2 * x1 + x2 <= 4 && 4 * x1 + 3 * x2 <= 9){if (3 * x1 + 2 * x2>max){resultX1 = x1;resultX2 = x2;max = 3 * x1 + 2 * x2;}}}textBox1.Text = resultX1.ToString();textBox2.Text = resultX2.ToString();textBox3.Text = max.ToString();