Sum67.java

package Array02;

import java.util.Arrays;

public class Sum67 {
    /*
     * 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
     */
    public static int sum67(int[] nums) {

        int sum = 0;
        int annul7=0;
        for (int i = 0 ; i <nums.length;i++) {
            if(nums[i] == 6) {
                for( int j = i; nums[j] != 7;j++) {
                    nums[j] = 0;
                    annul7 = j;
                }
                nums[annul7+1] = 0;
            }  else
                sum += nums[i];
        }
        return sum;

    }

}