Merge pull request #2656 from wangfanlan/v5-dev

test

hutool-core/src/test/java/cn/hutool/core/util/CollectionTest.java

@@ -0,0 +1,52 @@
+package cn.hutool.core.util;
+
+import org.junit.Assert;
+import org.junit.Test;
+import java.util.*;
+
+/**
+ * @author martin
+ * @create 2022-10-09 16:25
+ */
+public class CollectionTest {
+	@Test
+    public void test() {
+        List<Integer> list=new ArrayList<>();
+        list.add(3);
+        list.add(5);
+        list.add(1);
+        list.add(2);
+        list.add(7);
+        list.add(4);
+        //排序工具
+        Collections.sort(list);
+        //返回断开位置，如果返回size-1证明未断开
+        int maxLength = findMaxLength(list);
+		Assert.assertEquals(1,maxLength);
+
+    }
+    public int findMaxLength(List<Integer> nums) {
+        //集合长度
+        int n = nums.size();
+        //遍历
+        for (int i = 0; i < n; i++) {
+            //下一指针
+            int next=i+1;
+            if (next>=n){
+                break;
+            }
+            //当前值
+            Integer num = nums.get(i);
+            //下一值
+            Integer nextNum = nums.get(next);
+            if (num == null||nextNum==null){
+                return i;
+            }
+            if (nextNum-num!=1){
+                return i;
+            }
+
+        }
+        return n-1;
+    }
+}