Given three numbers x, y, z and a Boolean variable <code>strict</code>, return <code>true</code> if <code>strict</code> is false and x ≤ y ≤ z, or <code>strict</code> is true and x < y < z.
Given three numbers x, y, z and a Boolean variable <code>strict</code>, return <code>true</code> if <code>strict</code> is false and x ≤ y ≤ z, or <code>strict</code> is true and x < y < z.