parensvalidation

README

Valid Parentheses

Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.

An input string is valid if:

1. Open brackets must be closed by the same type of brackets.
2. Open brackets must be closed in the correct order.

Example 1:

Input: s = "()"
Output: true

Example 2:

Input: s = "()[]{}"
Output: true

Example 3:

Input: s = "(]"
Output: false

Example 4:

Input: s = "([)]"
Output: false

Example 5:

Input: s = "{[]}"
Output: true

Constraints:

• 1 <= s.length <= 10⁴
• s consists of parentheses only '()[]{}'.

Documentation

Index

• type RuneStack
  • func (s *RuneStack) Pop() (rune, error)
  • func (s *RuneStack) Push(item rune)

Types

type RuneStack

type RuneStack struct {
	Length int
	// contains filtered or unexported fields
}

func (*RuneStack) Pop

func (s *RuneStack) Pop() (rune, error)

Pop from stack

func (*RuneStack) Push

func (s *RuneStack) Push(item rune)

Push item to stack