From e8b27416d72a243c53cfe309dde5c23966c559b1 Mon Sep 17 00:00:00 2001
From: "Kai.Yuan" <kent.yuan@Gmail.com>
Date: Fri, 2 Feb 2024 17:06:31 +0100
Subject: [PATCH] [mv-0-to-end-array] move zeros to the end

---
 .../MoveZeroesToTheEndOfAnArrayUnitTest.java  | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 core-java-modules/core-java-arrays-operations-advanced-2/src/test/java/com/baeldung/movezerototheend/MoveZeroesToTheEndOfAnArrayUnitTest.java

diff --git a/core-java-modules/core-java-arrays-operations-advanced-2/src/test/java/com/baeldung/movezerototheend/MoveZeroesToTheEndOfAnArrayUnitTest.java b/core-java-modules/core-java-arrays-operations-advanced-2/src/test/java/com/baeldung/movezerototheend/MoveZeroesToTheEndOfAnArrayUnitTest.java
new file mode 100644
index 0000000000..ae0152feca
--- /dev/null
+++ b/core-java-modules/core-java-arrays-operations-advanced-2/src/test/java/com/baeldung/movezerototheend/MoveZeroesToTheEndOfAnArrayUnitTest.java
@@ -0,0 +1,40 @@
+package com.baeldung.movezerototheend;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
+public class MoveZeroesToTheEndOfAnArrayUnitTest {
+    static final int[] EXPECTED = new int[] { 1, 2, 3, 4, 0, 0 };
+
+    @Test
+    void whenCreatingANewArrayAndCopyingValues_thenGetTheExpectedResult() {
+        int[] array = new int[] { 1, 2, 0, 3, 4, 0 };
+        int[] result = new int[array.length];
+        int idx = 0;
+        for (int n : array) {
+            if (n != 0) {
+                result[idx++] = n;
+            }
+        }
+        assertArrayEquals(EXPECTED, result);
+    }
+
+    @Test
+    void whenMovingZeroInTheOriginalArray_thenGetTheExpectedResult() {
+        int[] array = new int[] { 1, 2, 0, 3, 4, 0 };
+        int idx = 0;
+        for (int n : array) {
+            if (n != 0) {
+                array[idx++] = n;
+            }
+            System.out.println(Arrays.toString(array));
+        }
+        while (idx < array.length) {
+            array[idx++] = 0;
+        }
+        assertArrayEquals(EXPECTED, array);
+    }
+}
\ No newline at end of file