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feat: add a solution for the daily problem of S2037
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AnthonySchuijlenburg committed Jun 13, 2024
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53 changes: 53 additions & 0 deletions src/main/java/com/anthonyschuijlenburg/S2037/Problem.md
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# 2037. Minimum Number of Moves to Seat Everyone

Topics: Array, Greedy, Sorting

There are n seats and n students in a room. You are given an array seats of length n, where seats[i] is the position of the ith seat. You are also given the array students of length n, where students[j] is the position of the jth student.

You may perform the following move any number of times:

Increase or decrease the position of the ith student by 1 (i.e., moving the ith student from position x to x + 1 or x - 1)

Return the minimum number of moves required to move each student to a seat such that no two students are in the same seat.

Note that there may be multiple seats or students in the same position at the beginning.

### Example 1:

Input: seats = [3,1,5], students = [2,7,4]
Output: 4
Explanation: The students are moved as follows:
- The first student is moved from from position 2 to position 1 using 1 move.
- The second student is moved from from position 7 to position 5 using 2 moves.
- The third student is moved from from position 4 to position 3 using 1 move.
In total, 1 + 2 + 1 = 4 moves were used.

### Example 2:

Input: seats = [4,1,5,9], students = [1,3,2,6]
Output: 7
Explanation: The students are moved as follows:
- The first student is not moved.
- The second student is moved from from position 3 to position 4 using 1 move.
- The third student is moved from from position 2 to position 5 using 3 moves.
- The fourth student is moved from from position 6 to position 9 using 3 moves.
In total, 0 + 1 + 3 + 3 = 7 moves were used.

### Example 3:

Input: seats = [2,2,6,6], students = [1,3,2,6]
Output: 4
Explanation: Note that there are two seats at position 2 and two seats at position 6.
The students are moved as follows:
- The first student is moved from from position 1 to position 2 using 1 move.
- The second student is moved from from position 3 to position 6 using 3 moves.
- The third student is not moved.
- The fourth student is not moved.
In total, 1 + 3 + 0 + 0 = 4 moves were used.

### Constraints:

n == seats.length == students.length
1 <= n <= 100
1 <= seats[i], students[j] <= 100

18 changes: 18 additions & 0 deletions src/main/java/com/anthonyschuijlenburg/S2037/Solution.java
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package com.anthonyschuijlenburg.S2037;

import java.util.Arrays;

public class Solution {
public int minMovesToSeat(int[] seats, int[] students) {
Arrays.sort(seats);
Arrays.sort(students);

int counter = 0;

for (int i = 0; i < seats.length; i++) {
counter += Math.abs(seats[i] - students[i]);
}

return counter;
}
}
31 changes: 31 additions & 0 deletions src/test/java/com/anthonyschuijlenburg/S2037/SolutionTest.java
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package com.anthonyschuijlenburg.S2037;

import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;

class SolutionTest {
@Test
void climbStairs_testCase1() {
Solution solutionGenerator = new Solution();
int result = solutionGenerator.minMovesToSeat(new int[]{3, 1, 5}, new int[]{2, 7, 4});

assertEquals(4, result);
}

@Test
void climbStairs_testCase2() {
Solution solutionGenerator = new Solution();
int result = solutionGenerator.minMovesToSeat(new int[]{4, 1, 5, 9}, new int[]{1, 3, 2, 6});

assertEquals(7, result);
}

@Test
void climbStairs_testCase3() {
Solution solutionGenerator = new Solution();
int result = solutionGenerator.minMovesToSeat(new int[]{2, 2, 6, 6}, new int[]{1, 3, 2, 6});

assertEquals(4, result);
}
}

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