Java > Array-2 > sum67 (CodingBat Solution)

Problem:

Return the sum of the numbers in the array, except ignore sections of numbers starting with a 6 and extending to the next 7 (every 6 will be followed by at least one 7). Return 0 for no numbers.

sum67({1, 2, 2}) → 5
sum67({1, 2, 2, 6, 99, 99, 7}) → 5
sum67({1, 1, 6, 7, 2}) → 4

Solution:

public int sum67(int[] nums) {
  int sum = 0;
  boolean stop = false;
  
  for (int i = 0; i < nums.length; i++) {
    if (nums[i] == 6)
      stop = true;
    if (stop == false)
      sum += nums[i];
    if (nums[i] == 7 && stop == true)
      stop = false;
  }
  return sum;
}