easyHashingPattern: Hashing
Distinct Hash Sum Lane Assignment Solution
Problem Statement
You are given an array of integers and the number of lanes. Assign each integer to a lane such that no two integers with the same hash value are in the same lane. The hash value of an integer is the sum of its digits.
Examples
Example 1:
Input:[123, 456, 789]
Output:[0, 1, 2]
Explanation: Here, the hash values are 6, 15, and 24 respectively.
Example 2:
Input:[111, 222, 333]
Output:[0, 1, 2]
Explanation: Here, the hash values are 3, 6, and 9 respectively.
Example 3:
Input:[1234, 2345, 3456]
Output:[0, 1, 2]
Explanation: Here, the hash values are 10, 15, and 20 respectively.
Constraints
- The length of the input array can be greater than the number of lanes.
- The input array can contain negative integers.
- The number of lanes can be 1.
Time: O(n log n) Space: O(n)
The optimized approach is to calculate the hash values of all the integers in the array and then sort them in ascending order. Finally, assign each integer to a lane based on its hash value.
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