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157 changes: 106 additions & 51 deletionspom.xml
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50 changes: 50 additions & 0 deletionssrc/main/test/Trung/BubbleSort.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| import java.util.Arrays; | ||
| /** | ||
| * @author rpatra16 | ||
| * @since 03/11/2018 | ||
| */ | ||
| public class BubbleSort { | ||
| /** | ||
| * In bubble sort, we start at the beginning of the array and swap | ||
| * the first two elements if the first is greater than the second. | ||
| * Then, we go to the next pair, and so on, continuously making sweeps | ||
| * of the array until it is sorted. In doing so, the smaller items | ||
| * slowly "bubble" up to the beginning of the list and in each inner | ||
| * iteration the largest element is sorted. Ergo, the inner loop runs | ||
| * until {@code length - i - 1} times. Time complexity: O(n^2). Space | ||
| * complexity: O(1), in place. To learn more: {@see https://youtu.be/6Gv8vg0kcHc} | ||
| * | ||
| * @param ar to be sorted | ||
| */ | ||
| public static void bubbleSort(int[] ar) { | ||
| for (int i = 0; i < ar.length - 1; i++) { | ||
| for (int j = 0; j < ar.length - i - 1; j++) { | ||
| if (ar[j] > ar[j + 1]) { | ||
| swap(ar, j, j + 1); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| public static void swap(int[] ar, int i, int j) { | ||
| int temp = ar[i]; | ||
| ar[i] = ar[j]; | ||
| ar[j] = temp; | ||
| } | ||
| public static void main(String[] args) { | ||
| int[] ar = {2, 5, 1, 7, 8}; | ||
| System.out.println(Arrays.toString(ar)); | ||
| bubbleSort(ar); | ||
| System.out.println(Arrays.toString(ar)); | ||
| ar = new int[]{7, 5, 1, 7, 8, 0, 23}; | ||
| System.out.println(Arrays.toString(ar)); | ||
| bubbleSort(ar); | ||
| System.out.println(Arrays.toString(ar)); | ||
| } | ||
| } | ||
75 changes: 75 additions & 0 deletionssrc/main/test/java/TestSort.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,75 @@ | ||
| import org.junit.jupiter.api.*; | ||
| import static org.junit.jupiter.api.Assertions.assertArrayEquals; | ||
| public class TestSort { | ||
| @BeforeAll | ||
| public static void BeforeAll() { | ||
| System.out.println("Start All Test"); | ||
| } | ||
| @AfterAll | ||
| public static void AfterAll() { | ||
| System.out.println("End All Test"); | ||
| } | ||
| @BeforeEach | ||
| public void BeforeEach() { | ||
| System.out.println("Begin Test"); | ||
| } | ||
| @AfterEach | ||
| public void AfterEach() { | ||
| System.out.println("After Test"); | ||
| } | ||
| @Test | ||
| @DisplayName("Default Test") | ||
| void testArray() { | ||
| int[] ar = {2, 5, 1, 7, 8}; | ||
| BubbleSort.bubbleSort(ar); | ||
| int[] expected = {1, 2, 5, 7, 8}; | ||
| assertArrayEquals(expected, ar); | ||
| } | ||
| @Test | ||
| @Tag("Array") | ||
| @DisplayName("Test With Empty Array") | ||
| public void testEmptyArray() { | ||
| int[] ar = {}; | ||
| BubbleSort.bubbleSort(ar); | ||
| int[] expected = {}; | ||
| assertArrayEquals(expected, ar); | ||
| } | ||
| @Test | ||
| @Tag("Array") | ||
| @DisplayName("Test With Duplicate Element") | ||
| public void testDuplicateParameter() { | ||
| int[] ar = {9, 5, 6, 0, 5, 6, 11, 2, 4}; | ||
| BubbleSort.bubbleSort(ar); | ||
| int[] expected = {0, 2, 4, 5, 5, 6, 6, 9, 11}; | ||
| assertArrayEquals(expected, ar); | ||
| } | ||
| @Test | ||
| @Tag("Array") | ||
| @DisplayName("Test With Negative Integer Element") | ||
| public void testSameArray() { | ||
| int[] ar = {-1, -2, 5, 7, -8}; | ||
| BubbleSort.bubbleSort(ar); | ||
| int[] expected = {-8, -2, -1, 5, 7}; | ||
| Assertions.assertArrayEquals(expected, ar); | ||
| } | ||
| @Test | ||
| @Tag("Array") | ||
| @DisplayName("Test With Array Reverse") | ||
| public void testReverseArray() { | ||
| int[] ar = {8, 7, 5, 2, 1}; | ||
| BubbleSort.bubbleSort(ar); | ||
| int[] expected = {1, 2, 5, 7, 8}; | ||
| assertArrayEquals(expected, ar); | ||
| } | ||
| } | ||
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