45 lines
2.7 KiB
Rust
45 lines
2.7 KiB
Rust
use statrs::statistics::Statistics;
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fn funnel(pseudo_random: &Vec<f64>, rule: fn(f64, f64) -> f64) -> Vec<f64> {
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let mut value = 0.0;
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let mut result = vec![0.0; pseudo_random.len()];
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for i in 0..pseudo_random.len() {
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result[i] = value + pseudo_random[i];
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value = rule(value, pseudo_random[i]);
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}
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return result;
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}
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fn experiment(label: &str, pseudo_random_xs: &Vec<f64>, pseudo_random_ys: &Vec<f64>, rule: fn(f64, f64) -> f64) {
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let result_x = funnel(pseudo_random_xs, rule);
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let result_y = funnel(pseudo_random_ys, rule);
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println!("{}\n{}", label, "-----------------------------------------");
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println!("Mean x, y: {:>8.4}, {:<8.4}", (&result_x).mean(), (&result_y).mean());
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println!("Standard deviation x, y:{:>8.4}, {:<8.4}\n", result_x.std_dev(), result_y.std_dev());
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}
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fn main() {
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let pseudo_random_xs = vec![ -0.533, 0.270, 0.859, -0.043, -0.205, -0.127, -0.071,
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0.275, 1.251, -0.231, -0.401, 0.269, 0.491, 0.951, 1.150, 0.001, -0.382, 0.161, 0.915, 2.080, -2.337,
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0.034, -0.126, 0.014, 0.709, 0.129, -1.093, -0.483, -1.193, 0.020, -0.051, 0.047, -0.095, 0.695, 0.340,
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-0.182, 0.287, 0.213, -0.423, -0.021, -0.134, 1.798, 0.021, -1.099, -0.361, 1.636, -1.134, 1.315,
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0.201, 0.034, 0.097, -0.170, 0.054, -0.553, -0.024, -0.181, -0.700, -0.361, -0.789, 0.279, -0.174,
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-0.009, -0.323, -0.658, 0.348, -0.528, 0.881, 0.021, -0.853, 0.157, 0.648, 1.774, -1.043, 0.051,
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0.021, 0.247, -0.310, 0.171, 0.000, 0.106, 0.024, -0.386, 0.962, 0.765, -0.125, -0.289, 0.521,
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0.017, 0.281, -0.749, -0.149, -2.436, -0.909, 0.394, -0.113, -0.598, 0.443, -0.521, -0.799, 0.087 ];
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let pseudo_random_ys = vec![0.136, 0.717, 0.459, -0.225, 1.392, 0.385, 0.121, -0.395,
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0.490, -0.682, -0.065, 0.242, -0.288, 0.658, 0.459, 0.000, 0.426, 0.205, -0.765, -2.188, -0.742,
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-0.010, 0.089, 0.208, 0.585, 0.633, -0.444, -0.351, -1.087, 0.199, 0.701, 0.096, -0.025, -0.868, 1.051,
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0.157, 0.216, 0.162, 0.249, -0.007, 0.009, 0.508, -0.790, 0.723, 0.881, -0.508, 0.393, -0.226, 0.710,
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0.038, -0.217, 0.831, 0.480, 0.407, 0.447, -0.295, 1.126, 0.380, 0.549, -0.445, -0.046, 0.428, -0.074,
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0.217, -0.822, 0.491, 1.347, -0.141, 1.230, -0.044, 0.079, 0.219, 0.698, 0.275, 0.056, 0.031, 0.421, 0.064,
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0.721, 0.104, -0.729, 0.650, -1.103, 0.154, -1.720, 0.051, -0.385, 0.477, 1.537, -0.901, 0.939, -0.411,
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0.341, -0.411, 0.106, 0.224, -0.947, -1.424, -0.542, -1.032];
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experiment("Rule 1:", &pseudo_random_xs, &pseudo_random_ys, |_z, _dz| {0.0});
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experiment("Rule 2:", &pseudo_random_xs, &pseudo_random_ys, |_z, dz| {-dz});
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experiment("Rule 3:", &pseudo_random_xs, &pseudo_random_ys, |z, dz| {-(z + dz)});
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experiment("Rule 4:", &pseudo_random_xs, &pseudo_random_ys, |z, dz| {z + dz});
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}
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