Mod_7 Assignments: Extra Credit

Chapter 20: Lists, Stacks, Queues, and Priority Queues

programming Exercises: 20.11 - (Match grouping symbols) a Java program continues various pairs of grouping symbols, such as

Parentheses: (and)

Braces: {and}

Brackets: [and]

Note that the grouping symbols cannot overlaps. For example. (a{b)} is illegal. Write a program to check whether a Java source-code file has correct pairs of grouping symbols.