code: function correctQuestionMarkAndAnd(url) {
  	var baseURL = url;
  
  	// Remove && mistake
  	baseURL = baseURL.replace(new RegExp('&&', 'g'), '&');
  
  	// Ends width ?
  	if (new RegExp('[\?]$').test(baseURL)) {
  		// Do nothing
  	} else {
  		// Does not end on ?
  		// Contains ?
  		if (baseURL.includes('?')) {
  			// Ends width &
  			if (new RegExp('[\&]$').test(baseURL)) {
  				// Do nothing
  			} else {
  				// Does not end on &
  				// Add &
  				baseURL += '&';
  			}
  
  		} else {
  			// Does not contain on ?
  
  			// Count of &
  			var countOfAnd = baseURL.split('&').length - 1;
  
  			// Ends with &
  			if (new RegExp('[\&]$').test(baseURL)) {
  
  				if (countOfAnd === 1) {
  					// Remove &
  					baseURL = baseURL.slice(0, -1);
  					// Add ?
  					baseURL += '?';
  				} else {
  					// Replace first & with ?
  					baseURL = baseURL.replace('&', '?');
  				}
  
  			} else {
  				// Does not contain on ? ends not on &
  
  				// Contains one or more &
  				if (countOfAnd > 1) {
  
  					// Replace first & with ?
  					baseURL = baseURL.replace('&', '?');
  
  					// Add &
  					baseURL += '&';
  				} else {
  					// Does not contain &
  					// Add ?
  					baseURL += '?';
  				}
  
  			}
  
  		}
  	}
  
  	return baseURL;
  }
docs: Correct mistakes with the characters '?' and '&'.
  
  @param {string}
  url URL with mistakes with the characters '?' and '&'.
  @returns {string} URL without mistakes with the characters '?' and '&'.