text: import { NotImplementedError } from '../extensions/index.js';
  
  /**
   * Given two strings, find the number of common characters between them.
   *
   * @param {String} s1
   * @param {String} s2
   * @return {Number}
   *
   * @example
   * For s1 = "aabcc" and s2 = "adcaa", the output should be 3
   * Strings have 3 common characters - 2 "a"s and 1 "c".
   */
  export default function getCommonCharacterCount(s1,s2) {
    let res = 0
    let resStr = s2.split('')
    s1.split('').forEach(c => {
      if (resStr.includes(c)) {
        resStr.splice(resStr.indexOf(c),1)
        res = res+1;
      } 
      return false;
    });
    return res;
  }
  