1399. Count Largest Group

1399. Count Largest GroupDifficulty: EasyTopics: Hash Table, MathYou are given an integer n.Each number from 1 to n is grouped according to the sum of its digits.Return the number of groups that have ...
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Lychrel number

Lychrel number
A Lychrel number is a natural number that cannot form a palindrome through the iterative process of reversing its digits and adding the resulting numbers. This process is often referred to as the 196-...
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