LeetCode 2724: Sort By Solution
Master LeetCode problem 2724 (Sort By), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
2724. Sort By
Problem Explanation
Explanation:
To solve this problem, we need to sort the given array arr based on the output of the given function fn. We can achieve this by using a custom comparator that compares the output of fn for each element in the array. We can then sort the array using this comparator to get the desired sorted array.
- Define a custom comparator that compares elements in the array based on the output of the function
fn. - Sort the array using the custom comparator to get the sorted array.
Time Complexity:
The time complexity of this approach is O(n log n), where n is the number of elements in the array.
Space Complexity:
The space complexity is O(1) as we are not using any extra space apart from the input and output arrays. :
Solution Code
import java.util.Arrays;
import java.util.Comparator;
public class Solution {
public int[][] sortBy(int[][] arr, Function<int[], Integer> fn) {
Arrays.sort(arr, Comparator.comparingInt(a -> fn.apply(a)));
return arr;
}
}Try It Yourself
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The time complexity for LeetCode 2724 (Sort By) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.
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