How should I practice Minimum Cost to Make Array Equal?

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Minimum Cost to Make Array Equal

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Problem statement

You are given two arrays nums and cost of equal length. In one operation, you may increase or decrease nums[i] by 1 and pay cost[i].

You may perform any number of operations. Return the minimum total cost needed to make every value in nums equal.

Function

minCost(nums: int[], cost: int[]) → long

Examples

Example 1

nums = [1,3,5,2]cost = [2,3,1,14]return = 8

Making every value 2 costs 2 + 3 + 3 + 0 = 8.

Example 2

nums = [2,2,2,2,2]cost = [4,2,8,1,3]return = 0

The values are already equal.

Constraints

1 <= nums.length == cost.length <= 10^5.
1 <= nums[i], cost[i] <= 10^6.
The answer fits in a signed 64-bit integer.