remove characters

Question

Given a string contaning only a, b and c, remove all b and ac.

removeChars('ab') // 'a'
removeChars('abc') // ''
removeChars('cabbaabcca') // 'caa'

What is the time and space complexity of your approach?

Code

/**
 * @param {string} input
 * @returns string
 */
function removeChars(input) {
  // your code here
}

Source

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