LeetCode 2191: Sort the Jumbled Numbers Solution

Master LeetCode problem 2191 (Sort the Jumbled Numbers), a medium 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.

2191. Sort the Jumbled Numbers

Medium

Array Sorting

Problem Explanation

Explanation:

To solve this problem, we first need to create a mapping between the original digits and the mapped digits according to the given mapping array. Then, we sort the nums array based on their mapped values.

Create a mapping between original digits and mapped digits using the mapping array.
Sort the nums array based on their mapped values.
Return the sorted nums array.

Time Complexity:

Creating the mapping: O(1) since the mapping array always has a fixed size.
Sorting the nums array: O(NlogN) where N is the number of elements in the nums array.

Space Complexity:

O(1) for the mapping array as its size is fixed.
O(N) for the sorted nums array.

Solution Code

class Solution {
    public int[] sortArray(int[] mapping, int[] nums) {
        int[] map = new int[10];
        for (int i = 0; i < mapping.length; i++) {
            map[i] = mapping[i];
        }
        
        Arrays.sort(nums, (a, b) -> {
            String sa = mapNumber(a, map);
            String sb = mapNumber(b, map);
            return sa.compareTo(sb);
        });
        
        return nums;
    }
    
    public String mapNumber(int num, int[] map) {
        String str = String.valueOf(num);
        StringBuilder sb = new StringBuilder();
        
        for (char c : str.toCharArray()) {
            sb.append(map[c - '0']);
        }
        
        return sb.toString();
    }
}

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