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Data StructuresEasy

Valid Parentheses (Stack)

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

Requirements:

  • Open brackets must be closed by the same type of brackets.
  • Open brackets must be closed in the correct order.
  • Every close bracket has a corresponding open bracket of the same type.
Sample Input:
s = '()[]{}'
Sample Output:
true
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