SOLVED What is Reverse object hierarchy

[maria irshad]

is there any way to reverse the object in js?

const initObject = { 
  value: 5,
  next: {
   value: 10,
   next: {
     value: 15
     next: null
   }
  },
}

//expected result

const newObject = {
  value: 15,
  next: {
    value: 10,
    next: {
      value: 5,
      next: null
    }
  }
}

need to a function, but struggling hard.
I tried to find the object depth-first and then make a founded amount of iterations for … in … inside the object but don’t know how to rewrite the new one

[zaasmi]

@maria-irshad said in What is Reverse object hierarchy:

is there any way to reverse the object in js?

const initObject = { 
  value: 5,
  next: {
   value: 10,
   next: {
     value: 15
     next: null
   }
  },
}

//expected result

const newObject = {
  value: 15,
  next: {
    value: 10,
    next: {
      value: 5,
      next: null
    }
  }
}

need to a function, but struggling hard.
I tried to find the object depth-first and then make a founded amount of iterations for … in … inside the object but don’t know how to rewrite the new one

Try this

const initObject = { 
  value: 5,
  next: {
   value: 10,
   next: {
     value: 15,
     next: null
   }
  }
}

const getValues = ({ value, next }) =>
  next 
    ? [value, ...getValues(next)] 
    : [value]

const createObject = values => 
  values.reduce((next, value) => ({ value, next }), null)

const output = createObject(getValues(initObject))

console.log(output)

[zaasmi]

Reff

[zaasmi]

@maria-irshad said in What is Reverse object hierarchy:

is there any way to reverse the object in js?

const initObject = { 
  value: 5,
  next: {
   value: 10,
   next: {
     value: 15
     next: null
   }
  },
}

//expected result

const newObject = {
  value: 15,
  next: {
    value: 10,
    next: {
      value: 5,
      next: null
    }
  }
}

need to a function, but struggling hard.
I tried to find the object depth-first and then make a founded amount of iterations for … in … inside the object but don’t know how to rewrite the new one

Try this

const initObject = { 
  value: 5,
  next: {
   value: 10,
   next: {
     value: 15,
     next: null
   }
  }
}

const getValues = ({ value, next }) =>
  next 
    ? [value, ...getValues(next)] 
    : [value]

const createObject = values => 
  values.reduce((next, value) => ({ value, next }), null)

const output = createObject(getValues(initObject))

console.log(output)