Return the lowest index at which a value (second argument) should be inserted into an array (first argument) once it has been sorted.
getIndexToIns([1,2,3,4], 1.5) should return
1 because it is greater than
1 (index 0), but less than
2 (index 1).
getIndexToIns([20,3,5], 19) should return
2 because once the array has been sorted it will look like
19 is less than
20 (index 2) and greater than
5 (index 1).
Remember to use Read-Search-Ask if you get stuck. Write your own code.