← Back to companies
[ OK ] Loaded —
[ INFO ]
$ cd
$ ls -lt
01
02
03
04
05
$ ls -lt
01
02
03
04
05
user@intervues:~/$
Example 1:
Input: ["CommandLog","execute","execute","execute","undo","undo","undo"] [[],["A",["x"]],["B",["y"]],["C",["x","y"]],[null],["x"],["y"]]
Output: [null,null,null,null,"C","A","B"]
Explanation:
Example 2:
Input: ["CommandLog","execute","execute","execute","undo","undo","undo"] [[],["alpha",[]],["beta",["prod"]],["gamma",[]],["prod"],[null],[null]]
Output: [null,null,null,null,"beta","gamma","alpha"]