Can someone please help me write the code for this problem using underscore.js (http://underscorejs.org) in javascript? Problem: Write a program that outputs all possibilities to put + or - or nothing between the numbers 1, 2, ..., 9 (in this order) such that the result is always 100. For example: 1 + 2 + 34 5 + 67 8 + 9 = 100. Thank you!