Description: Data Structure Problem: deleted a few problems. Each step is always to a minimum number to make the rest of the figures deleted, according to the order of highest to lowest, search, if you increment the number, then delete the last digit otherwise, remove the first interval of the first character of diminishing, so delete a position will form a new string of numbers. Then head back to the train, according to the above rule and then delete the next number
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Number deleted.c