def test_example1(self):
"""
Example 1:
Input: ["SnapshotArray","set","snap","set","get"]
[[3],[0,5],[],[0,6],[0,0]]
Output: [null,null,0,null,5]
Explanation:
SnapshotArray snapshotArr = new SnapshotArray(3); // set the length to be 3
snapshotArr.set(0,5); // Set array[0] = 5
snapshotArr.snap(); // Take a snapshot, return snap_id = 0
snapshotArr.set(0,6);
snapshotArr.get(0,0); // Get the value of array[0] with snap_id = 0, return 5
:return:
"""
# SnapshotArray snapshotArr = new SnapshotArray(3); // set the length to be 3
sa = SnapshotArray(3)
# Set array[0] = 5
sa.set(0, 5)
# Take a snapshot, return snap_id = 0
snapid = sa.snap()
self.assertEqual(0, snapid)
sa.set(0, 6)
# Get the value of array[0] with snap_id = 0, return 5
out = sa.get(0, 0)
self.assertEqual(5, out)
def test_case3(self):
"""
["SnapshotArray","set","snap","snap","snap","get","snap","snap","get"]
[[1],[0,15],[],[],[],[0,2],[],[],[0,0]]
"""
sa = SnapshotArray(1)
sa.set(0, 15)
sa.snap()
sa.snap()
sa.snap()
out = sa.get(0, 1)
out = sa.get(0, 2)
self.assertEqual(15, out)
sa.snap()
sa.snap()
out = sa.get(0, 0)
self.assertEqual(out, 15)
def test_case6(self):
"""
["SnapshotArray","set","snap","set","get","snap", "get","get","set","set", "snap","get","set","snap","snap","get","snap","get"]
[[3],[1,5],[],[1,6],[0,0],[], [0,0],[0,0],[0,11],[1,16], [],[0,1],[2,12],[],[],[0,4],[],[1,1]]
bad Output [null,null,0,null,0,1,0,0,null,null, 2,0,null,3,4,11,5,0]
Expected [null,null,0,null,0,1,0,0,null,null, 2,0,null,3,4,11,5,6]
"""
sa = SnapshotArray(3)
sa.set(1, 5)
sa.snap()
sa.set(1, 6)
self.assertEqual(0, sa.get(0, 0))
sa.snap()
self.assertEqual(0, sa.get(0, 0))
self.assertEqual(0, sa.get(0, 0))
sa.set(0, 11)
sa.set(1, 16)
def test_case4(self):
"""
["SnapshotArray","snap","get","get","set","get","set","get","set"]
[[2],[],[1,0],[0,0],[1,8],[1,0],[0,20],[0,0],[0,7]]
[null,0,0,0,null,8,null,20,null]
Expected
[null,0,0,0,null,0,null,0,null]
"""
sa = SnapshotArray(2)
self.assertEqual(0, sa.snap())
self.assertEqual(0, sa.get(1, 0))
self.assertEqual(0, sa.get(0, 0))
sa.set(1, 8)
self.assertEqual(0, sa.get(1, 0))
sa.set(0, 20)
self.assertEqual(0, sa.get(0, 0))
sa.set(0, 7)
def test_case7(self):
"""
["SnapshotArray","snap","snap","set","snap","get","set","get","snap","get"]
[[1],[],[],[0,4],[],[0,1],[0,12],[0,1],[],[0,3]]
Output
[null,0,1,null,2,0,null,0,3,0]
Expected
[null,0,1,null,2,0,null,0,3,12]
"""
sa = SnapshotArray(1)
sa.snap()
sa.snap()
sa.set(0, 4)
sa.snap()
self.assertEqual(0, sa.get(0, 1))
sa.snap()
self.assertEqual(0, sa.get(0, 0))
self.assertEqual(0, sa.get(0, 0))
sa.set(0, 11)
sa.set(1, 16)
def test_case2(self):
# SnapshotArray snapshotArr = new SnapshotArray(3); // set the length to be 3
sa = SnapshotArray(3)
out = sa.get(2, 0)
self.assertEqual(0, out)
# Set array[0] = 5
sa.set(0, 5)
# Take a snapshot, return snap_id = 0
snapid = sa.snap()
self.assertEqual(0, snapid)
sa.set(0, 6)
snapid = sa.snap()
self.assertEqual(1, snapid)
out = sa.get(0, 0)
self.assertEqual(5, out)
out = sa.get(0, 1)
self.assertEqual(6, out)
def test_case7(self):
sa = SnapshotArray(1)
sa.snap()
sa.snap()
sa.set(0, 4)
sa.snap()
sa.get(0, 1)
sa.get(0, 12)
sa.set(0, 1)
sa.snap()
sa.get(0, 3)
def test_case5(self):
"""
["SnapshotArray","set","set","snap","get","set","snap","set","set","get","get"]
[[3],[1,18],[1,4],[],[0,0],[0,20],[],[0,2],[1,1],[1,1],[1,0]]
bad: [null,null,null,0,0,null,1,null,null,0,4]
Expected: [null,null,null,0,0,null,1,null,null,4,4]
"""
sa = SnapshotArray(3)
# ["SnapshotArray","set","set","snap","get", "set","snap","set","set","get","get"]
# [[3],[1,18],[1,4],[],[0,0], [0,20],[], [0,2],[1,1], [1,1],[1,0]]
sa.set(1, 18)
sa.set(1, 4)
self.assertEqual(0, sa.snap())
sa.set(0, 20)
sa.snap()
sa.set(0, 2)
sa.set(1, 1)
self.assertEqual(4, sa.get(1, 1))
self.assertEqual(4, sa.get(1, 0))