Create a program that checks if Santa's sleigh makes a parabola jump between cities. You receive a number array that represents the height at which the sleigh is at each moment.
For the parabola to be correct, the sleigh's trip must be ascending at the beginning and descending at the end. It cannot go up again once it has gone down, nor can it start the trip going down. Let's see some examples:
const heights = [1, 3, 8, 5, 2] checkJump(heights) // true /* It's `true`. The jump goes up-down. 8 (highest point) ↗ ↘ 3 5 ↗ ↘ 1 2 */ const heights = [1, 7, 3, 5] checkJump(heights) // false /* It's `false`. It goes up-down-up. 7 5 ↗ ↘ ↗ 1 3
We need the program to return a
boolean that indicates whether the sleigh makes a parabola or not.