1675. Minimize Deviation in Array 🌟🌟🌟

You are given an array nums of n positive integers.

You can perform two types of operations on any element of the array any number of times:

• If the element is even, divide it by 2.
  • For example, if the array is [1,2,3,4], then you can do this operation on the last element, and the array will be [1,2,3,2].
• If the element is odd, multiply it by 2.
  • For example, if the array is [1,2,3,4], then you can do this operation on the first element, and the array will be [2,2,3,4].

The deviation of the array is the maximum difference between any two elements in the array.

Return the minimum deviation the array can have after performing some number of operations.

Priority Queue (AC)

Code

class Solution {
public:
    int minimumDeviation(vector<int>& nums)
    {
        int n = nums.size();
        int mx = INT_MIN, mn = INT_MAX;

        // Increase the odd numbers to its maximum value which is num*2 & track min,max num.
        for (int i = 0; i < n; ++i) {
            if ((nums[i] % 2) & 1)
                nums[i] *= 2;
            mx = max(mx, nums[i]);
            mn = min(mn, nums[i]);
        }
        int minDev = mx - mn;

        priority_queue<int> pq;
        // Inserting nums Priority queue (Max Heap)
        for (int i = 0; i < n; i++) {
            pq.push(nums[i]);
        }

        while (((pq.top()) & 1) == 0) {
            int topNum = pq.top();
            pq.pop(); // popped the top element

            minDev = min(minDev, topNum - mn);
            topNum /= 2;
            mn = min(mn, topNum); // updating min
            pq.push(topNum); // pushing again the top as we have to minimize the max
        }

        minDev = min(minDev, pq.top() - mn);

        return minDev;
    }
};

Set

Code

// <!-- TODO: Code here -->

Must Read

• [✅ C++

  Easy

  2 Approaches

  Priority Queue

  Set](https://leetcode.com/problems/minimize-deviation-in-array/discuss/1781709/C%2B%2B-oror-Easy-oror-2-Approaches-oror-Priority-Queue-oror-Set)