### Problem Statement

Installation programs often run several tasks, one after another. Each task is assigned an integer, the expected execution time of this task. During the installation, a progress bar shows the user what percentage of the installation time has elapsed. In this problem, the bar will be represented by a string containing exactly 20 characters. If X% of the installation has been completed, then the leftmost X% of these characters should be a '#', while the remaining characters should be '.'. If necessary, round down the number of '#' characters to the nearest integer less than or equal to the actual value (see example 0). The bar starts at 0% and is only updated each time a task finishes execution.

Create a class ProgressBar containing the method showProgress which takes a int[] taskTimes, the expected execution time for each task in the order they are run, and an int tasksCompleted, the number of these tasks that have been completed. The method should return a String containing exactly 20 characters showing the progress bar according to the descriptions above.

### Definition

 Class: ProgressBar Method: showProgress Parameters: int[], int Returns: String Method signature: String showProgress(int[] taskTimes, int tasksCompleted) (be sure your method is public)

### Constraints

-taskTimes will contain between 1 and 50 elements, inclusive.
-Each element in taskTimes will be between 1 and 1000, inclusive.
-tasksCompleted will be between 0 and the number of elements in taskTimes, inclusive.

### Examples

0)

 `{19,6,23,17}` `3`
`Returns: "##############......"`
 This installation consist of 4 tasks, and the expected execution times for these are 19, 6, 23 and 17, respectively. Since the first 3 tasks have been completed, the total execution time for the installation so far has been 19+6+23 = 48 and the total expected time is 19+6+23+17 = 65. Thus 48/65 = 73.84615% of the installation has been completed, so the first 20*0.7384615 = 14.76923 = 14 (round down) characters in the string should be '#', and the remaining 6 should be '.'. Thus the method returns "##############......"
1)

 `{2,3,7,1,4,3}` `4`
`Returns: "#############......."`
 The installation has run for 2+3+7+1 = 13 units and the total execution is 2+3+7+1+4+3 = 20.
2)

 `{553,846,816,203,101,120,161,818,315,772}` `4`
`Returns: "##########.........."`
3)

 `{7,60,468,489,707,499,350,998,1000,716,457,104,597,583,396,862}` `2`
`Returns: "...................."`
4)

 `{419,337,853,513,632,861,336,594,94,367,336,297,966,627,399,433,846,859,80,2}` `19`
`Returns: "###################."`
 Even though about 99.98% of the installation has been completed, the last character should still be a '.' since we always round down.

#### Problem url:

http://www.topcoder.com/stat?c=problem_statement&pm=1975

#### Problem stats url:

http://www.topcoder.com/tc?module=ProblemDetail&rd=4670&pm=1975

Yarin

#### Testers:

lbackstrom , brett1479

#### Problem categories:

Simple Math, String Manipulation