[1, 4, 5, 2, 1]
4
adding
j = 1
t = 1
i = 0
adding
j = 2
t = 1
i = 0
adding
j = 3
t = 1
i = 0
adding
j = 4
t = 1
i = 0
0
0
0
0
[1, 2, 2, 2, 2]