[1,2,3,4]
[1,3,2,4]
[3,1,2,4]或者[3,1,4,2]也是正确答案
[1,3,5,6,7]
[1,3,5,7,6]
[3,1,5,7,6]等也是正确答案
[1,4,4,3]
[1,3,4,4]