code: function compareComplexNumbers (x, y) {
    if (x.re > y.re) { return 1 }
    if (x.re < y.re) { return -1 }
  
    if (x.im > y.im) { return 1 }
    if (x.im < y.im) { return -1 }
  
    return 0
  }
docs: Compare two complex numbers, `x` and `y`:
  
  - First, compare the real values of `x` and `y`
  - If equal, compare the imaginary values of `x` and `y`
  
  @params {Complex} x
  @params {Complex} y
  @returns {number} Returns the comparison result: -1, 0, or 1