ValidParentheses.java

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 */

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

// An input string is valid if:

// Open brackets must be closed by the same type of brackets.
// Open brackets must be closed in the correct order.
// Note that an empty string is also considered valid.

// Example 1:

// Input: "()"
// Output: true
// Example 2:

// Input: "()[]{}"
// Output: true
// Example 3:

// Input: "(]"
// Output: false
// Example 4:

// Input: "([)]"
// Output: false
// Example 5:

// Input: "{[]}"
// Output: true

class Solution {
  public boolean isValid(String s) {
    
    return false;
  }
}