/**
 *
 * Ashish Patel
 * e: ashishsushilPatel@gmail.com
 * w: https://ashish.me
 *
 */

/* 
You are given the string s. Your friend just asked you if it's possible to change the string from s to a string t by removing some characters from it. You're a pro at programming, so you decided to create a program to determine this.

Example

For s = "ceoydefthf5iyg5h5yts" and t = "codefights", the output should be convertString(s, t) = true.

For s = "addbyca" and t = "abcd", the output should be convertString(s, t) = false.
*/

function convertString(s, t) {
  let word = ''
  let matchIndex = 0
  for (let index = 0; index < s.length; index++) {
    if (s[index] === t[matchIndex]) {
      word = word.concat(s[index])
      matchIndex += 1
    }
    if (word === t) {
      return true
    }
  }
  return false
}

test('convert String', () => {
  expect(convertString('ceoydefthf5iyg5h5yts', 'codefights')).toEqual(true)
  expect(convertString('addbyca', 'abcd')).toEqual(false)
})