Write a function to determine if a number is a happy number (A happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit).

Hard

Problem Statement

Sample Input

Sample Output

True

Limits

Time: 2s · Memory: 256 MB

Code Editor

00:00

def is_happy_number(): n = 19 # Your code here return

Input

Expected Output

True

Custom Input (stdin)

Program Output

> Run your code to see console output.

Programming Exercises

Write a function to determine if a number is a happy number (A happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit).

Problem Statement

Sample Input

Sample Output

Limits

Hint 1