feat: 添加 CollectUtil 集合工具类

Author: cadecode

simple-common/src/main/java/top/cadecode/common/util/CollectUtil.java

@@ -0,0 +1,37 @@
+package top.cadecode.common.util;
+
+import java.util.Arrays;
+
+/**
+ * @author Cade Li
+ * @date 2021/12/4
+ * @description 集合工具类
+ */
+public class CollectUtil {
+
+    /**
+     * 判断数组是否为空
+     *
+     * @param objects 数组
+     * @return boolean
+     */
+    public static boolean isEmpty(Object[] objects) {
+        return objects == null || objects.length == 0;
+    }
+
+    /**
+     * 判断数组是否包含指定元素
+     *
+     * @param objects 数组
+     * @param o       元素
+     * @return boolean
+     */
+    public static boolean contains(Object[] objects, Object o) {
+        if (objects == null || objects.length == 0) {
+            return false;
+        }
+        return Arrays.asList(objects).contains(o);
+    }
+
+
+}

simple-web/src/test/java/top/cadecode/common/util/CollectUtilTest.java

@@ -0,0 +1,18 @@
+package top.cadecode.common.util;
+
+import org.junit.jupiter.api.Test;
+
+/**
+ * @author Cade Li
+ * @date 2021/12/4
+ * @description ToDo
+ */
+public class CollectUtilTest {
+
+    @Test
+    public void arrayContains() {
+        Integer[] arr = {1, 2, 3};
+        boolean contains = CollectUtil.contains(arr, 3);
+        System.out.println(contains);
+    }
+}