https://leetcode.com/problems/jump-game/

s50600822 · Oct 29, 2023 · 09b8242 · 09b8242
1 parent 3209d58
commit 09b8242
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Showing 3 changed files with 15 additions and 11 deletions.
diff --git a/interview_prep/algorithm/java/src/main/java/hoa/can/code/ez/PartitionEqualSubSetSum.java b/interview_prep/algorithm/java/src/main/java/hoa/can/code/ez/PartitionEqualSubSetSum.java
@@ -1,7 +1,5 @@
 package hoa.can.code.ez;
 
-import java.util.Arrays;
-
 import util.Array;
 
 public class PartitionEqualSubSetSum {
@@ -12,7 +10,6 @@ public static int equalPartition(int n, int arr[]){
     }
 
     static int canAddUp(int arr[], int target){
-        System.out.println(String.format("canAddUp %d %s", target, Arrays.toString(arr)));
         if(target==0){
             return 1;
         }

diff --git a/interview_prep/algorithm/java/src/main/java/hoa/can/code/gg/Jumping.java b/interview_prep/algorithm/java/src/main/java/hoa/can/code/gg/Jumping.java
@@ -3,16 +3,20 @@
 import java.util.Arrays;
 
 /**
- * https://leetcode.com/problems/jump-game/
+ * <a href="https://leetcode.com/problems/jump-game/">Desc</a>
  */
 public class Jumping {
-    final static int NO_WAY = Integer.MAX_VALUE;
+    final static int NO_WAY = 10000;
+
     public static boolean canJump(int[] nums) {
         int[] memo = new int[nums.length];
         Arrays.fill(memo, -1);
-        return (minJumps(nums, 0, nums.length - 1, memo) > -1);
+        int step = minJumps(nums, 0, nums.length - 1, memo);
+        //if (nums.length == 1 && step == 0) return false;
+        return (step != NO_WAY);
     }
-    private static int minJumps(int steps[], int begin, int dest, int[] memo) {
+
+    private static int minJumps(int[] steps, int begin, int dest, int[] memo) {
         if (begin == dest)
             return 0;
         if (steps[begin] == 0)

diff --git a/interview_prep/algorithm/java/src/test/java/hoa/can/code/JumpingTest.java b/interview_prep/algorithm/java/src/test/java/hoa/can/code/JumpingTest.java
@@ -5,19 +5,22 @@
 
 import static hoa.can.code.gg.Jumping.canJump;
 import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class JumpingTest {
     @Test
     @DisplayName("ok")
     public void yes() {
-        assertEquals(true, canJump(new int[]{2, 3, 1, 1, 4}));
-        assertEquals(true, canJump(new int[]{1, 3, 5, 8, 9, 2, 6, 7, 6, 8, 9}));
+        assertTrue(canJump(new int[]{0}));
+        assertTrue(canJump(new int[]{2, 3, 1, 1, 4}));
+        assertTrue(canJump(new int[]{1, 3, 5, 8, 9, 2, 6, 7, 6, 8, 9}));
     }
 
     @Test
     @DisplayName("nope")
     public void no() {
-        assertEquals(true, canJump(new int[]{0}));
-        assertEquals(true, canJump(new int[]{0,1}));
+        assertFalse(canJump(new int[]{0, 1}));
+        assertFalse(canJump(new int[]{3, 2, 1, 0, 4}));
     }
 }