Number Stream

Have the function NumberStream(str) take the str parameter being passed which will contain the numbers 2 through 9, and determine if there is a consecutive stream of digits of at least N length where N is the actual digit value. If so, return the string true, otherwise return the string false. For example: if str is "6539923335" then your program should return the string true because there is a consecutive stream of 3's of length 3. The input string will always contain at least one digit.

Examples

Input: "5556293383563665"
Output: falseInput: "5788888888882339999"
Output: true

Largest Four

Have the function LargestFour(arr) take the array of integers stored in arr, and find the four largest elements and return their sum. For example: if arr is [4, 5, -2, 3, 1, 2, 6, 6] then the four largest elements in this array are 6, 6, 4, and 5 and the total sum of these numbers is 21, so your program should return 21. If there are less than four numbers in the array your program should return the sum of all the numbers in the array.

Examples

Input: [1, 1, 1, -5]
Output: -2

Input: [0, 0, 2, 3, 7, 1]
Output: 13