diff --git a/Top150Interview/55JumpGame.py b/Top150Interview/55JumpGame.py
index beb6969..82ed5c9 100644
--- a/Top150Interview/55JumpGame.py
+++ b/Top150Interview/55JumpGame.py
@@ -3,28 +3,55 @@ def canJump(nums):
         :type nums: List[int]
         :rtype: bool
         """
-        # Each index value is the maximum you can jump from that position
-        maxJump = 0
-        for x in range(len(nums)-1):
-            maxJump += nums[x]
-            if nums[x] >= len(nums)-(x+1):
-                return True
-            # print(maxJump)
-            if nums[x] == 0:
-                print(x+1)
-                print(len(nums))
-                if nums[x+1] >= len(nums)-x:
-                    return True
-                return False
-        return True
-        # if maxJump >= len(nums)-1:
+        # # Each index value is the maximum you can jump from that position
+        # maxJump = 0
+        # if len(nums) == 1:
         #     return True
-        # else:
-        #     return False
+        # for x in range(len(nums)-1):
+        #     print(nums[x])
+        #     maxJump += nums[x]
+        #     if nums[x] >= len(nums)-(x+1):
+        #         return True
+        #     # print(maxJump)
+        #     if nums[x] == 0:
+        #         if x-1 >= 0 and nums[x-1] >=2:
+        #             maxJump += nums[x]
+        #         else:
+        #             # print(x+1)
+        #             # print(len(nums))
+        #             # if nums[x+1] >= len(nums)-(x+2) and x+1 != len(nums)-1:
+        #             #     return True
+        #             return False
+        # return False
+
+        # Double pointer method
+        start = 0
+        jump = len(nums)-2
+        # Case for single value array
+        if len(nums) == 1 or nums[start] >= len(nums)-1:
+            return True
+        while start <= jump:
+            print(f'start: {start}, value {nums[start]}')
+            print(f'jump index: {jump}, value: {nums[jump]}')
+            if nums[start] == 0:
+                return False
+            # check if jump is equal to end jump
+            if not nums[jump] >= (len(nums)-(jump+1)):
+                jump -= 1
+            if not nums[start + nums[start]] >= 0:
+                if start + nums[start] >= jump:
+                    return True
+                start += 1
+            else:
+                start += 1
+
 
 # print(canJump([2,3,1,1,4]))
-print(canJump([3,2,1,0,4]))
+# print(canJump([3,2,1,0,4]))
 # print(canJump([3,0,8,2,0,0,1]))
 # print(canJump([2,0,2]))
+print(canJump([2,5,0,0]))
+# print(canJump([0,2,3]))
 # print(canJump([2,0,0]))
-# print(canJump([1,1,2,2,0,1,1]))
\ No newline at end of file
+# print(canJump([1,1,2,2,0,1,1]))
+# print(canJump([5,9,3,2,1,0,2,3,3,1,0,0]))
\ No newline at end of file