1116. Print Zero Even Odd

https://leetcode.com/problems/print-zero-even-odd

Description

You have a function printNumber that can be called with an integer parameter and prints it to the console.

• For example, calling printNumber(7) prints 7 to the console.

You are given an instance of the class ZeroEvenOdd that has three functions: zero, even, and odd. The same instance of ZeroEvenOdd will be passed to three different threads:

• Thread A: calls zero() that should only output 0's.

• Thread B: calls even() that should only output even numbers.

• Thread C: calls odd() that should only output odd numbers.

Modify the given class to output the series "010203040506..." where the length of the series must be 2n.

Implement the ZeroEvenOdd class:

• ZeroEvenOdd(int n) Initializes the object with the number n that represents the numbers that should be printed.

• void zero(printNumber) Calls printNumber to output one zero.

• void even(printNumber) Calls printNumber to output one even number.

• void odd(printNumber) Calls printNumber to output one odd number.

Example 1:

**Input:** n = 2
**Output:** "0102"
**Explanation:** There are three threads being fired asynchronously.
One of them calls zero(), the other calls even(), and the last one calls odd().
"0102" is the correct output.

Example 2:

**Input:** n = 5
**Output:** "0102030405"

Constraints:

• 1 <= n <= 1000

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