Introduction
It is a hard level algorithm. I tried to write the solution in the contest but I could not manage to pass online judge since I had several issues.
My solution
I wrote a solution and shared on leetcode discuss. Here is the link.
My journey
I spent 50 minutes to work on the algorithm in the last week contest. I made the first submission until there is 10 minutes left. And then I submitted second time.
First submission is here, line 35 index out of range runtime error.int index2 = map[numberLength];
Second submission is here, I gave the wrong answer. I need to review the definition of return indexes. Line 44 statement needs to be changed.
Actionable items
Definitely I should work more carefully on some test cases, so I can verify my code is working for those test cases.
I also need to figure out how to simplify the code before I make any submission. There is a 5 minutes penalty for each failed submission.
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