Improved tests

src/main/java/g1101_1200/s1117_building_h2o/H2O.java

@@ -35,10 +35,12 @@ public HydrogenRunnable(H2O h2O) {
             this.h2O = h2O;
         }
 
+        private static void run2() {}
+
         @Override
         public void run() {
             try {
-                h2O.hydrogen(() -> System.out.print('H'));
+                h2O.hydrogen(HydrogenRunnable::run2);
             } catch (InterruptedException ignored) {
                 // ignored
             }
@@ -52,10 +54,12 @@ public OxygenRunnable(H2O h2O) {
             this.h2O = h2O;
         }
 
+        private static void run2() {}
+
         @Override
         public void run() {
             try {
-                h2O.oxygen(() -> System.out.print('O'));
+                h2O.oxygen(OxygenRunnable::run2);
             } catch (InterruptedException ignored) {
                 // ignored
             }

src/main/java/g1401_1500/s1489_find_critical_and_pseudo_critical_edges_in_minimum_spanning_tree/Solution.java

@@ -48,9 +48,6 @@ public List<List<Integer>> findCriticalAndPseudoCriticalEdges(int n, int[][] edg
                     pce.addAll(cur);
                     pce.add(ind);
                 }
-                if (!p) {
-                    System.out.println("Should not reach here");
-                }
             }
         }
         // critical edges

src/test/java/g0401_0500/s0478_generate_random_point_in_a_circle/SolutionTest.java

@@ -3,16 +3,15 @@
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
-import com_github_leetcode.CommonUtils;
 import org.junit.jupiter.api.Test;
 
 class SolutionTest {
     @Test
     void randPoint() {
         Solution solution = new Solution(1.0, 0.0, 0.0);
-        CommonUtils.printArray(solution.randPoint());
-        CommonUtils.printArray(solution.randPoint());
-        CommonUtils.printArray(solution.randPoint());
+        solution.randPoint();
+        solution.randPoint();
+        solution.randPoint();
         assertThat(solution, equalTo(solution));
     }
 }

src/test/java/g0401_0500/s0497_random_point_in_non_overlapping_rectangles/SolutionTest.java

@@ -3,18 +3,17 @@
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
-import com_github_leetcode.CommonUtils;
 import org.junit.jupiter.api.Test;
 
 class SolutionTest {
     @Test
     void solutionTest() {
         Solution solution = new Solution(new int[][] {{-2, -2, 1, 1}, {2, 2, 4, 6}});
-        CommonUtils.printArray(solution.pick());
-        CommonUtils.printArray(solution.pick());
-        CommonUtils.printArray(solution.pick());
-        CommonUtils.printArray(solution.pick());
-        CommonUtils.printArray(solution.pick());
+        solution.pick();
+        solution.pick();
+        solution.pick();
+        solution.pick();
+        solution.pick();
         assertThat(true, equalTo(true));
     }
 }

src/test/java/g0501_0600/s0519_random_flip_matrix/SolutionTest.java

@@ -3,18 +3,17 @@
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
-import com_github_leetcode.CommonUtils;
 import org.junit.jupiter.api.Test;
 
 class SolutionTest {
     @Test
     void solutionTest() {
         Solution solution = new Solution(3, 1);
-        CommonUtils.printArray(solution.flip());
-        CommonUtils.printArray(solution.flip());
-        CommonUtils.printArray(solution.flip());
+        solution.flip();
+        solution.flip();
+        solution.flip();
         solution.reset();
-        CommonUtils.printArray(solution.flip());
+        solution.flip();
         assertThat(true, equalTo(true));
     }
 }