Task

Write two equal-sized numerical arrays 'x' and 'y' to
a two-column text file named 'filename'.

The first column of the file contains values from an 'x'-array with a
given 'xprecision', the second -- values from 'y'-array with 'yprecision'.

For example, considering:

   x = {1, 2, 3, 1e11};
   y = {1, 1.4142135623730951, 1.7320508075688772, 316227.76601683791}; 
                                                          /* sqrt(x) */
   xprecision = 3;
   yprecision = 5;

The file should look like:

   1    1
   2    1.4142
   3    1.7321
   1e+011   3.1623e+005

This task is intended as a subtask for Measure relative performance of sorting algorithms implementations.




import os
const (
    x = [1.0, 2, 3, 1e11]
    y = [1.0, 1.4142135623730951, 1.7320508075688772, 316227.76601683791]
 
    xprecision = 3
    yprecision = 5
)
 
fn main() {
    if x.len != y.len {
        println("x, y different length")
        return
    }
    mut f := os.create("filename")?
    defer {
        f.close()
    }
    for i,_ in x {
        f.write_string('${x[i]:3}, ${y[i]:1G}\n')?
    }
}