Given an array arr[] containing positive elements. A and B are two numbers defining a range. The task is to check if the array contains all elements in the given range.
Example 1:
Input: N = 7, A = 2, B = 5
arr[] = {1, 4, 5, 2, 7, 8, 3}
Output: Yes
Explanation: It has elements between
range 2-5 i.e 2,3,4,5
Example 2:
Input: N = 7, A = 2, B = 6
arr[] = {1, 4, 5, 2, 7, 8, 3}
Output: No
Explanation: Array does not contain 6.
Your Task:
This is a function problem. You don't need to take any input, as it is already accomplished by the driver code. You just need to complete the function check_elements() that takes array arr, integer N, integer A, and integer B as parameters and returns the boolean True if array elements contain all elements in the given range else boolean False.
Note: If the array contains all elements in the given range then driver code outputs Yes otherwise, it outputs No
Expected Time Complexity: O(N).
Expected Auxiliary Space: O(1).
Constraints:
1 ≤ N ≤ 10^{7}

见题面

见题面