12. Array Exercises 2

countFill

• input: int[] nums
• input: int s

Fill the given array with ints counting down from s.

int []a = new int[6];
countFill(a, 80); // {80,79,78,77,76,75}
System.out.println(Arrays.toString(a));

noSevens

int noSevens(int[] nums)

• Count how many sevens are in the array.
• Set all of them to zero.
• Return the number of sevens you find.

int[] ns = { 10,7,20,7,30,7,7,40};
int a = noSevens(ns);
String ans = Arrays.toString(ns);
System.out.println(a)
System.out.println(ans)

countBetween23

int countBetween23 (int[] nums)

• Count how many numbers between a two (2) and a three (3).
• Only one two and one three.
• 2 appears before 3

int [] ns = {1,2,5,6,7,13,3,8}
System.out.println(countBetween(ns)); // 4