breakCamelCase.js

in about Dev on Algorithm

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Problem

  • Complete the solution so that the function will break up camel casing, using a space between words.
    • 단어 사이의 공백을 사용해서 낙타대문자(camelCase)를 분해해서 반환한다.



Solution 01

function breakCamelCase(str) {
  let arr = str.split('');
  let result = '';
  
  arr.forEach(i => {
    if (i === i.toUpperCase()) {
      result += ' ' + i;
    } else {
      result += i;
    }
  });
  return result;
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number


Solution 02

function breakCamelCase(str) {
  let arr = str.split('');
  let result = [];
  
  arr.forEach(i => {
    if (i === i.toUpperCase()) {
      result.push(' ');
    }
    result.push(i);
  });
  return result.join('');
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number


Solution 03

function breakCamelCase(str) {
  return [...str].map(i => {
    return i === i.toUpperCase() ? ` ${i}` : i;
  }).join('');
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number


Solution 04

function breakCamelCase(str) {
  return str.replace(/[A-Z]/g, function(i) {
    return ' ' + i;
  });
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number


Solution 05

function breakCamelCase(str) {
  return str.replace(/(?=[A-Z])/g, ' ');
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number


Solution 06

function breakCamelCase(str) {
  return str.replace(/([a-z])([A-Z])/g, '$1 $2');
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number


Solution 07

function breakCamelCase(str) {
  return str.replace(/[A-Z]/g, ' $&');
}

breakCamelCase('camelCasing');        // camel Casing
breakCamelCase('createPhoneNumber');  // create Phone Number