Added tests

Author: javadev

src/main/java/g3501_3600/s3510_minimum_pair_removal_to_sort_array_ii/Solution.java

@@ -5,8 +5,8 @@
 
 public class Solution {
     private static class Segment {
-        private int start;
-        private int end;
+        private final int start;
+        private final int end;
         private Segment left;
         private Segment right;
         private int lIdx;

src/test/java/g3501_3600/s3508_implement_router/RouterTest.java

@@ -40,4 +40,26 @@ void router2() {
         // Return [] and remove it from router.
         assertThat(router.forwardPacket(), equalTo(new int[] {}));
     }
+
+    @Test
+    void router3() {
+        // Initialize Router with memoryLimit of 3.
+        Router router = new Router(3);
+        // Packet is added. Return True.
+        assertThat(router.addPacket(1, 4, 6), equalTo(true));
+        // The only packet with destination 0 and timestamp in the inclusive range
+        assertThat(router.getCount(4, 1, 4), equalTo(0));
+    }
+
+    @Test
+    void router4() {
+        // Initialize Router with memoryLimit of 2.
+        Router router = new Router(2);
+        // Packet is added. Return True.
+        assertThat(router.addPacket(2, 5, 1), equalTo(true));
+        // Return [2, 5, 1] and remove it from router.
+        assertThat(router.forwardPacket(), equalTo(new int[] {2, 5, 1}));
+        // The only packet with destination 0 and timestamp in the inclusive range
+        assertThat(router.getCount(5, 1, 1), equalTo(0));
+    }
 }