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chore: [LEETCODE | 3228] <> Maximum Number of Operations to move ones to the end #75

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Merged
benmak11 merged 1 commit into from
Nov 14, 2025
Merged

chore: [LEETCODE | 3228] <> Maximum Number of Operations to move ones to the end #75

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18 changes: 18 additions & 0 deletions src/main/java/problemset/a3228/MaximumNumberOfOpsToMoveOnesToTheEnd.java
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Original file line number Diff line number Diff line change
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package problemset.a3228;

public class MaximumNumberOfOpsToMoveOnesToTheEnd {
public int maxOperations(String s) {
int res = 0, countOnes = 0;
int n = s.length();

for (int i = 0; i < n; i++) {
char curr = s.charAt(i);

if (curr == '1')
countOnes++;
else if (i > 0 && s.charAt(i - 1) == '1')
res += countOnes;
}
return res;
}
}
30 changes: 30 additions & 0 deletions src/test/java/problemset/a3228/MaximumNumberOfOpsToMoveOnesToTheEndTest.java
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package problemset.a3228;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

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

class MaximumNumberOfOpsToMoveOnesToTheEndTest {

private MaximumNumberOfOpsToMoveOnesToTheEnd max;
private String testcaseOne;
private String testcaseTwo;

@BeforeEach
void setUp() {
max = new MaximumNumberOfOpsToMoveOnesToTheEnd();
testcaseOne = "1001101";
testcaseTwo = "00111";
}

@Test
void test_maxOperations_happyCase() {
assertEquals(4, max.maxOperations(testcaseOne));
}

@Test
void test_maxOperations_edgeCase() {
assertEquals(0, max.maxOperations(testcaseTwo));
}
}
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