3394. Minimum Array End¶
Difficulty: Medium
LeetCode Problem View on GitHub
3394. Minimum Array End
Medium
You are given two integers n and x. You have to construct an array of positive integers nums of size n where for every 0 <= i < n - 1, nums[i + 1] is greater than nums[i], and the result of the bitwise AND operation between all elements of nums is x.
Return the minimum possible value of nums[n - 1].
Example 1:
Input: n = 3, x = 4
Output: 6
Explanation:
nums can be [4,5,6] and its last element is 6.
Example 2:
Input: n = 2, x = 7
Output: 15
Explanation:
nums can be [7,15] and its last element is 15.
Constraints:
1 <= n, x <= 108
Solution¶
class Solution {
public long minEnd(int n, int x) {
long current = x;
while ((n - 1) > 0) {
n--;
current = (current + 1) | x;
}
return current;
}
}
Complexity Analysis¶
- Time Complexity:
O(?) - Space Complexity:
O(?)
Approach¶
Detailed explanation of the approach will be added here