Next Number Using 3s and 5s | Dataford Interview Questions

Given an unsigned integer, give me the next number only using 3's and 5's. Example, I give your 7, you give me 33, I give you 34, you give me 35. Write a program on how you'd do this...

Implement def next_number(n): and return the smallest integer strictly greater than n whose decimal representation contains only 3 and 5. The input is a non-negative integer, and the output is an integer. For example, next_number(35) returns 53, while next_number(333) returns 335.

Constraints

0 <= n <= 10^18
The input is an unsigned integer.
The output must be strictly greater than n.
The decimal representation of the output contains only the digits 3 and 5.

Function Signature

def next_number(n):

Your question is Next Number Using 3s and 5s. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Given an unsigned integer, give me the next number only using 3's and 5's. Example, I give your 7, you give me 33, I give you 34, you give me 35. Write a program on how you'd do this...

Constraints

0 <= n <= 10^18
The input is an unsigned integer.
The output must be strictly greater than n.
The decimal representation of the output contains only the digits 3 and 5.

Function Signature

def next_number(n):

Your question is Next Number Using 3s and 5s. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.