Valid Brackets

Given an input string that contains brackets, write a function hasValidBrackets that returns a boolean indicating whether the brackets are valid.

The brackets we will consider are (, ), [, ], {, }.
The string can contain other characters, but those can be ignored.
A string is valid if there are an equal number of opening brackets and closing brackets of the same type with all being matched.
Brackets are considered matched if they appear in the correct order (must be opened before they are closed) and don't overlap.

Breakdown

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Validate My Answer

Every opening bracket must have a closing bracket AND they must be ordered correctly to be valid.
Think about solving this from the inside-out. For the brackets to be valid, you can start with the innermost open/close pair and compare those. If those match, you would set them aside and check the pairs after it. You really just need to be validating one potential match at a time.
With an additional data structure, you can solve this in O(n) time and space and only iterate through the string once.

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Test Results

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/**
 * @param {str} string
 * @return {bool}
 */
const hasValidBrackets = (string) => {
  // Your solution here
};

Valid Brackets

Given an input string that contains brackets, write a function hasValidBrackets that returns a boolean indicating whether the brackets are valid.

The brackets we will consider are (, ), [, ], {, }.
The string can contain other characters, but those can be ignored.
A string is valid if there are an equal number of opening brackets and closing brackets of the same type with all being matched.
Brackets are considered matched if they appear in the correct order (must be opened before they are closed) and don't overlap.

/**
 * @param {str} string
 * @return {bool}
 */
const hasValidBrackets = (string) => {
  // Your solution here
};