203. Simplify Unix Path
MediumStack
Simplify an absolute Unix path: resolve . and .., collapse multiple slashes and remove a trailing slash.
Input format
A single path starting with /.
Output format
The canonical path.
Example 1
Input
/home/
Output
/home
Example 2
Input
/../
Output
/
Constraints
1 ≤ length ≤ 3000
Read input from standard input and print the answer to standard output. Your code is judged against 5 test cases, most of them hidden.
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