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  1. Prepare
  2. Algorithms
  3. Recursion
  4. Recursive Digit Sum
  5. Discussions

Recursive Digit Sum

  • bsnagarjun90
     + 0 comments

    Python

    def superDigit(n, k):
    # Write your code here
    num = str(sum([int(i) for i in str(n)])) * k
    
    def rec(num):
        if len(str(num)) == 1:
            return num
        
        return rec(str(sum([int(i) for i in num])))
        
    return rec(num)