Master the steps to use fast and slow pointers for cycle detection and mid-point identification.

Central CIP Path

Fast and Slow Pointers

# Statement

Write an algorithm to determine if a number $n$ is a happy number.

We use the following process to check if a given number is a happy number:

- Starting with the given number $n$, replace the number with the sum of the squares of its digits.
- Repeat the process until:
  - The number equals $1$, which will depict that the given number $n$ is a happy number.
  - It enters a cycle, which will depict that the given number $n$ is not a happy number.

Return TRUE if $n$ is a happy number, and FALSE if not.

**Constraints**

- $1 \leq$ $n$ $\leq 2^{31} - 1$



Let's solve the Happy Number problem using the Fast and slow pointers pattern

Solution: Happy Number

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Solution: Happy Number

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