Replaced toString with values in unit tests.

Author: javadev

src/test/java/g0001_0100/s0001_two_sum/SolutionTest.java

@@ -3,14 +3,11 @@
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
-import java.util.Arrays;
 import org.junit.Test;
 
 public class SolutionTest {
     @Test
     public void twoSum() {
-        assertThat(
-                Arrays.toString(new Solution().twoSum(new int[] {2, 7, 11, 15}, 9)),
-                equalTo("[0, 1]"));
+        assertThat(new Solution().twoSum(new int[] {2, 7, 11, 15}, 9), equalTo(new int[] {0, 1}));
     }
 }

src/test/java/g0001_0100/s0015_three_sum/SolutionTest.java

@@ -3,13 +3,14 @@
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
+import com_github_leetcode.ArrayUtils;
 import org.junit.Test;
 
 public class SolutionTest {
     @Test
     public void threeSum() {
         assertThat(
-                new Solution().threeSum(new int[] {-1, 0, 1, 2, -1, -4}).toString(),
-                equalTo("[[-1, -1, 2], [-1, 0, 1]]"));
+                new Solution().threeSum(new int[] {-1, 0, 1, 2, -1, -4}),
+                equalTo(ArrayUtils.getLists(new int[][] {{-1, -1, 2}, {-1, 0, 1}})));
     }
 }

src/test/java/g0001_0100/s0018_four_sum/SolutionTest.java

@@ -3,13 +3,16 @@
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.MatcherAssert.assertThat;
 
+import com_github_leetcode.ArrayUtils;
 import org.junit.Test;
 
 public class SolutionTest {
     @Test
     public void fourSum() {
         assertThat(
-                new Solution().fourSum(new int[] {1, 0, -1, 0, -2, 2}, 0).toString(),
-                equalTo("[[-2, -1, 1, 2], [-2, 0, 0, 2], [-1, 0, 0, 1]]"));
+                new Solution().fourSum(new int[] {1, 0, -1, 0, -2, 2}, 0),
+                equalTo(
+                        ArrayUtils.getLists(
+                                new int[][] {{-2, -1, 1, 2}, {-2, 0, 0, 2}, {-1, 0, 0, 1}})));
     }
 }

src/test/java/g0001_0100/s0031_next_permutation/SolutionTest.java

@@ -10,6 +10,6 @@ public class SolutionTest {
     public void nextPermutation() {
         int[] array = new int[] {1, 2, 3};
         new Solution().nextPermutation(array);
-        assertThat(java.util.Arrays.toString(array), equalTo("[1, 3, 2]"));
+        assertThat(array, equalTo(new int[] {1, 3, 2}));
     }
 }