#177
Balancing Brackets
| Difficulty: | Medium |
| Topics: | parsing |
When parsing a snippet of code it's often a good idea to do a
sanity check to see if all the brackets match up. Write a function that takes in
a string and returns truthy if all square [ ] round ( ) and curly { } brackets are
properly paired and legally nested, or returns falsey otherwise.
 | (__ "This string has no brackets.") |
| (__ "class Test {
public static void main(String[] args) {
System.out.println(\"Hello world.\");
}
}") |
| (not (__ "(start, end]")) |
| (not (__ "())")) |
| (not (__ "[ { ] } ")) |
| (__ "([]([(()){()}(()(()))(([[]]({}()))())]((((()()))))))") |
| (not (__ "([]([(()){()}(()(()))(([[]]({}([)))())]((((()()))))))")) |
| (not (__ "[")) |