Minimum Operations to Make Array Equal II - Practice Coding | SlaveCode
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2541. Minimum Operations to Make Array Equal II
Medium
30 Points
Array
Math
Greedy
You are given two integer arrays nums1 and nums2 of equal length n and an integer k. You can perform the following operation on nums1:
nums1 is said to be equal to nums2 if for all indices i such that 0 <= i < n, nums1[i] == nums2[i].
Return the minimum number of operations required to make nums1 equal to nums2. If it is impossible to make them equal, return -1.
Examples
Example 1
Input: nums1 = [4,3,1,4], nums2 = [1,3,7,1], k = 3
Output: 2
Explanation: In 2 operations, we can transform nums1 to nums2.
1st operation: i = 2, j = 0. After applying the operation, nums1 = [1,3,4,4].
2nd operation: i = 2, j = 3. After applying the operation, nums1 = [1,3,7,1].
One can prove that it is impossible to make arrays equal in fewer operations.
Example 2
Input: nums1 = [3,8,5,2], nums2 = [2,4,1,6], k = 1
Output: -1
Explanation: It can be proved that it is impossible to make the two arrays equal.
Constraints
n == nums1.length == nums2.length
2 <= n <= 105
0 <= nums1[i], nums2[j] <= 109
0 <= k <= 105
2541. Minimum Operations to Make Array Equal II
Medium
30 Points
Array
Math
Greedy
You are given two integer arrays nums1 and nums2 of equal length n and an integer k. You can perform the following operation on nums1:
nums1 is said to be equal to nums2 if for all indices i such that 0 <= i < n, nums1[i] == nums2[i].
Return the minimum number of operations required to make nums1 equal to nums2. If it is impossible to make them equal, return -1.
Examples
Example 1
Input: nums1 = [4,3,1,4], nums2 = [1,3,7,1], k = 3
Output: 2
Explanation: In 2 operations, we can transform nums1 to nums2.
1st operation: i = 2, j = 0. After applying the operation, nums1 = [1,3,4,4].
2nd operation: i = 2, j = 3. After applying the operation, nums1 = [1,3,7,1].
One can prove that it is impossible to make arrays equal in fewer operations.
Example 2
Input: nums1 = [3,8,5,2], nums2 = [2,4,1,6], k = 1
Output: -1
Explanation: It can be proved that it is impossible to make the two arrays equal.