Suppose you are given the following code:
\n\n\nclass FooBar {\n public void foo() {\n for (int i = 0; i < n; i++) {\n print("foo");\n }\n }\n\n public void bar() {\n for (int i = 0; i < n; i++) {\n print("bar");\n }\n }\n}\n\n\nThe same instance of FooBar will be passed to two different threads:
A will call foo(), whileB will call bar().Modify the given program to output "foobar" n times.
\n
Example 1:
\n\n\nInput: n = 1\nOutput: "foobar"\nExplanation: There are two threads being fired asynchronously. One of them calls foo(), while the other calls bar().\n"foobar" is being output 1 time.\n\n\n
Example 2:
\n\n\nInput: n = 2\nOutput: "foobarfoobar"\nExplanation: "foobar" is being output 2 times.\n\n\n
\n
Constraints:
\n\n1 <= n <= 1000给你一个类：
\n\n\nclass FooBar {\n public void foo() {\n for (int i = 0; i < n; i++) {\n print(\"foo\");\n }\n }\n\n public void bar() {\n for (int i = 0; i < n; i++) {\n print(\"bar\");\n }\n }\n}\n\n\n两个不同的线程将会共用一个 FooBar 实例：
foo() 方法，而bar() 方法请设计修改程序，以确保 \"foobar\" 被输出 n 次。
\n\n
示例 1：
\n\n\n输入：n = 1\n输出：\"foobar\"\n解释：这里有两个线程被异步启动。其中一个调用 foo() 方法, 另一个调用 bar() 方法，\"foobar\" 将被输出一次。\n\n\n
示例 2：
\n\n\n输入：n = 2\n输出：\"foobarfoobar\"\n解释：\"foobar\" 将被输出两次。\n\n\n
\n\n
提示：
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