Write a method findClosest that takes an ArrayList of integers list and an int num as parameters. The method returns the index of the element in list that is closest to num and is smaller than or equal to num. If all elements are larger than num then the method should return $-1.$

For example, given list storing values $[20,30,25,89,14],$

findClosest$($list$,29)$ should return $2($index of element $25)$

findClosest$($list$,50)$ should return $1($index of element $30)$

findClosest$($list$,10)$ should return $-1($no elements meet the conditions$)$