1115. Print FooBar Alternately

https://leetcode.com/problems/print-foobar-alternately

Description

Suppose you are given the following code:

class FooBar {
  public void foo() {
    for (int i = 0; i < n; i++) {
      print("foo");
    }
  }
  public void bar() {
    for (int i = 0; i < n; i++) {
      print("bar");
    }
  }
}

The same instance of FooBar will be passed to two different threads:

• thread A will call foo(), while

• thread B will call bar().

Modify the given program to output "foobar" n times.

Example 1:

**Input:** n = 1
**Output:** "foobar"
**Explanation:** There are two threads being fired asynchronously. One of them calls foo(), while the other calls bar().
"foobar" is being output 1 time.

Example 2:

**Input:** n = 2
**Output:** "foobarfoobar"
**Explanation:** "foobar" is being output 2 times.

Constraints:

• 1 <= n <= 1000

ac