I tried to solve this question. But I got WA. I thought I chose a greedy approach but it seems like I have missed a counter case here. Can some please point that out. Thanks!!
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I tried to solve this question. But I got WA. I thought I chose a greedy approach but it seems like I have missed a counter case here. Can some please point that out. Thanks!!
Название |
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You are solving the problem with the correct logic, but the implementation is incorrect. When converting the array to a string, removing occurrences of the first or last element in the original array works only if every number in the array consists of a single digit.
In cases like the example
22 2 2 2 2
, when it is converted to the string222222
, your code will yield a result of zero because it incorrectly interprets the string as three instances of22
, which is wrong. The correct solution is to simulate the same logic, but using two pointers on the array.Thanks a lot for your help.
You are welcome