You are given an integer array nums of size n and a positive integer k.Divide the array into one or more arrays of size 3 satisfying the following conditions:Each element of nums should be in exactly one array.The difference between any two elements in one array is less than or equal to k.Return a 2D array containing all the arrays. If it is impossible to satisfy the conditions, return an empty array. And if there are multiple answers, return any of them.
Question
You are given an integer array nums of size n and a positive integer k.Divide the array into one or more arrays of size 3 satisfying the following conditions:Each element of nums should be in exactly one array.The difference between any two elements in one array is less than or equal to k.Return a 2D array containing all the arrays. If it is impossible to satisfy the conditions, return an empty array. And if there are multiple answers, return any of them.
Solution
This problem can be solved using a greedy algorithm. Here are the steps:
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Sort the array in ascending order. This will ensure that the smallest numbers are considered first.
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Initialize an empty list to store the arrays.
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Iterate over the sorted array. For each number, check if it can be added to the last array in the list. If the difference between the number and the maximum element in the last array is less than or equal to k, add the number to the last array. Otherwise, start a new array with the number.
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After iterating over all the numbers, check if all the arrays in the list have size 3. If not, return an empty array.
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Return the list of arrays.
Here is a Python code that implements these steps:
def divide_array(nums, k):
nums.sort()
arrays = [[Similar Questions
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