Check if a Number is a Duck Number

Given a positive integer n written without leading zeroes, return true when its decimal representation contains at least one zero; otherwise return false. A…

Given a positive integer `n` written without leading zeroes, return `true` when its decimal representation contains at least one zero; otherwise return `false`. A value satisfying this condition is called a duck number.

- `1 ≤ n ≤ 10^9` - `n` is always a positive integer and has no leading zeroes.

Example 1: input n = 102; output true. The decimal representation contains zero.

Example 2: input n = 1000; output true. The decimal representation contains zeroes after its leading digit.

Example 3: input n = 123; output false. None of the digits is zero.

Category: Math. Topic: math. Difficulty: Easy. Patterns: math.