Amazon Warehouse Decode Encoded String
Amazon Warehouse Decode Encoded String
MediumStacks50% accepted
Amazon barcode encoder compresses strings: k[encoded_string] means encoded_string repeated k times. Given an encoded string, return the decoded string. k is always a positive integer.
Approach
Decode string encoded as k[pattern] using a stack.
Input
3[a]2[bc]
Output
aaabcbc
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