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Better be explicit and check start<end before swapping
Naveen Kumar
Aug 6, 2025
1
5
0
Oct 29, 2025
Simpler algorithm with one loop, and set
Vini Neto
Oct 3, 2024
1
63
0
Jul 3, 2025
Used a stack in python
Nabeel Keblawi
Sep 4, 2024
1
28
0
Feb 24, 2025
Dont need to convert string to array, reduce the space complexity to O(1)
Dang Khoa Tran
Jul 31, 2024
1
52
0
Sep 13, 2024
Code is wrong
Ashutosh Tiwari
Jul 24, 2024
0
35
0
Oct 29, 2025
Easier to understand than provided solution
Luis Roel
Aug 11, 2023
0
112
1
Aug 11, 2023
my solution ( i believe this is an O(N) time complexity solution ) not sure on space complexity
nikita michaelson
Jul 5, 2023
2
77
3
Sep 17, 2025
Improve python solution with hashset
Victor An
May 17, 2023
1
81
1
Jul 19, 2024