#jumathek7

challenge-7.js

class Clock {
  currentPosition(code) {
    // Split the code to array of char
    const codes = code.split('')

    // Initiate some variables
    let isMove = false,
      position = 60,
      currentCode = '';

    // Iterate the codes
    for (let c in codes) {
      // decide if clock is start or not, with checking out if currentCode is equal with code in iteration 
      // and isMove equal to false. 
      if (codes[c] === currentCode && !isMove) {
        // set isMove to true, mark the clock is started
        isMove = true
        // set the position
        // if currentCode equal to i and last position is 60 reduce position. 
        // if not set position move to 1
        position = (currentCode === 'i' && position === 60) ? 60 - 1 : 1;
        // after starting continue the interation
        continue
      }

      // check is a clock move
      if (isMove) {
        // check first if a clock is moving and the code not equal to
        // currentCode, stop the clock
        if (codes[c] !== currentCode) {
          // set isMove to false
          isMove = false
          // then continue iteration
          continue
        }

        // set the position
        // if code equal to a 
        position = (codes[c] === 'a') ?
          // and position is 60, move clock to 1 position. if not position, plus 1.
          (position === 60) ? position = 1 : position += 1 :
          // another condition if code not equal to a, and position is 1. 
          // move clock to 60 position, if not position minus 1 
          (position === 1) ? position = 60 : position -= 1;
      }

      // save the currentCode
      currentCode = codes[c]
    }

    console.log(position);
  }
}


// Expecting 60
new Clock().currentPosition('aiaiaiaiaiaiaiai')

// Expecting 21
new Clock().currentPosition('aaaaaaaaaaaaaaaaaaaaaa')

// Expecting 1
new Clock().currentPosition('aaiiaa')

// Expecting 1 
new Clock().currentPosition('aaaiaiaiiiiaaai')

// Expecting 30
new Clock().currentPosition('iiiiiiiiiiiiiiiiiiiiiiiiiiiiiii')

// Expecting 30
new Clock().currentPosition('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')