Write a function that takes coordinates of two points on a two-dimensional plane and returns the length of the line segment connecting those two points.

Examples

lineLength(arr[0]={15, 7}, arr[1]={22, 11}) ➞ 8.06

lineLength(arr[0]={0, 0}, arr[1]={0, 0}) ➞ 0

lineLength(arr[0]={0, 0}, arr[1]={1, 1}) ➞ 1.41

Notes

• The numbers in the argument array can be positive or negative.
• The order of the given numbers is X, Y.
• There is 0.1 tolerance so you don't need to round your result.
• This challenge is easier than it looks.