will give you the addition of all the numbers from 1 to the number you enter. ex: find the sum of all the numbers from 1 to 1000. WARNING - if you are using the brute force method the moving background will greatly reduce performance.
made from scratch 2.0 +algorithm immensely improved (all problems solved in less than a second) 1.0 +added brute force method (1+2+3+...+998+999+1000)
