naijanoni:
If you want to understand regular expressions and how to use it. This is the best tutorial I've seen anywhere:
https://regular-expressions.info/tutorialcnt.html?wlr=1 (I just finished it).

This is good also (but not as complete as the one above): http://javascript.info/regular-expressions

i have a regex problem, can you help me to solve it??

isArray:
let's go there

yes bro... Lets go show them what we have got!

isArray:
i have the course

How can i get it from you?

guente02:

How can i get it from you?

send me a mail

isArray:
send me a mail

I'm interested too oh!

isArray:
i have a regex problem, can you help me to solve it??

I'll try. Whats it?

Post the regex here , so that we can all learn

Hello guys, before i can learn Node.js what aspects of JavaScript do i need to know?

Afolabi6046:
Hello guys, before i can learn Node.js what aspects of JavaScript do i need to know?

async programming

isArray:
async programming

async/await yeah?

Afolabi6046:
async/await yeah?

Callbacks then Promises.
Asyn await only makes one write promises in a convenient way. But once you get your head around it, you'd never basic promises with then() and catch() chaining.
For whatever reason i haven't been able to totally understand callbacks.

Afolabi6046:
Hello guys, before i can learn Node.js what aspects of JavaScript do i need to know?

Basic JavaScript fundamentals.
There are only layers upon layers of abstraction to what we see as complex but las las it's the basic understanding of the underlying concepts that would help you in wrapping your head all things complex.

Just prepare for the rabbit hole.

isArray:
i have the course

Hi.. Bros.. Can you send it to all interested please.. ? I think you can create a shared link on either dropbox or Google Drive.

What say you? Abeg biko

Help with this,please? I do not understand the error

oderindeolayemi:
Help with this,please? I do not understand the error

1. You have not called this function.
2. Where are you going to display it.. hint. Think console method

oderindeolayemi:
Help with this,please? I do not understand the error

the error means the test expected an 11-item long array but got a 9-item long array.

try including the starting and ending numbers.

Assume their example( "12, 0 => [2, 4, 6, 8, 10]" ) was "12, 0 => [0, 2, 4, 6, 8, 10, 12]". In other words, if you supply 10 and 2 to the function, it should return [2,...10], not [4,...8].

Doesn't make sense based on what they asked, but that's apparently what their final test setup checks for.

so you'd need to make your loops look more like:
for ( let i = y; i <= x, i++ ) {
if ( i%2 === 0 ) {...}
}

...which would probably make explicitly stating a conditional for the case of two identical numbers passed become a necessity.

untethered:


the error means the test expected an 11-item long array but got a 9-item long array.

try including the starting and ending numbers.

Assume their example( "12, 0 => [2, 4, 6, 8, 10]" ) was "12, 0 => [0, 2, 4, 6, 8, 10, 12]". In other words, if you supply 10 and 2 to the function, it should return [2,...10], not [4,...8].

Doesn't make sense based on what they asked, but that's apparently what their final test setup checks for.

so you'd need to make your loops look more like:
for ( let i = y; i <= x, i++ ) {
if ( i%2 === 0 ) {...}
}

...which would probably make explicitly stating a conditional for the case of two identical numbers passed become a necessity.

This worked with a little tweaking.. I doff my hat to you.. Great work. thumbs up

HolyGhostGym:


This worked with a little tweaking.. I doff my hat to you.. Great work. thumbs up

cheers

With Plenty Mental Gymnastics...

guente02:
With Plenty Mental Gymnastics...

I tell you oooo... omo..

code golf version

const number_game = (x, y) => {
let arr = [];
let b = x > y;
for(let i=b?y:x; i<=(b?x:y); i++)
if ((b && !(i%2)) || (y>x && i%2))
arr.push(i);
return arr;
}

prolly not recommended/readable though... just experimenting.

Thanks, it worked a treat. My code was just missing the <= sign instead of <. God bless you people however who has completed this countChange exercise? That's the only exercise left for me to submit, i think. Anyone with ideas on how to solve it?

Thanks man

untethered:


the error means the test expected an 11-item long array but got a 9-item long array.

try including the starting and ending numbers.

Assume their example( "12, 0 => [2, 4, 6, 8, 10]" ) was "12, 0 => [0, 2, 4, 6, 8, 10, 12]". In other words, if you supply 10 and 2 to the function, it should return [2,...10], not [4,...8].

Doesn't make sense based on what they asked, but that's apparently what their final test setup checks for.

so you'd need to make your loops look more like:
for ( let i = y; i <= x, i++ ) {
if ( i%2 === 0 ) {...}
}

...which would probably make explicitly stating a conditional for the case of two identical numbers passed become a necessity.

Pls has anyone done the object oriented task in the qualified.io test, i'm only getting 5 out of nine test cases to work anyones help will be really appreciated.

oderindeolayemi:
Thanks, it worked a treat. My code was just missing the <= sign instead of <. God bless you people however who has completed this countChange exercise? That's the only exercise left for me to submit, i think. Anyone with ideas on how to solve it?

Tried using normal combination nCr approach, but it get returns the sum without adding itself. like [1,2,3,5] returns [3+1] for a targetSum of 4. whereas we are expected to get [1+ 1+1+1], [2+2], [3+1]....Anyideas how I could make it count itself first as a case

Please friends, help me out on this. I am trying to get a function that adds its indexes to itself. See below, everything seems to be working fine until i throw in the call back on line10 which gives me a stack exceeded error, seems I didnt get the callback rightly please help me check it out. I need it to complete my coins challange. Thanks alot.


function addSelf(numberSet, targetSum) {
var count = 0,
count2 = 3;
var res = 0;

for (var i=0; i<targetSum; i++) {
var setIndex = numberSet[i];

res +=setIndex;

if (res > targetSum) count2--;

if (res === targetSum) count++;

//if (res < targetSum) addSelf(numberSet, targetSum);

return {res , targetSum, count, count2};
}
};

addSelf([1,2], 4);

oderindeolayemi:
Thanks, it worked a treat. My code was just missing the <= sign instead of <. God bless you people however who has completed this countChange exercise? That's the only exercise left for me to submit, i think. Anyone with ideas on how to solve it?

i have.. remains challenge 5 for me.
most of the questions from around 8 downward are algorithm related mainly

https://flaviocopes.com/ isn't bad.

untethered:


the error means the test expected an 11-item long array but got a 9-item long array.

try including the starting and ending numbers.

Assume their example( "12, 0 => [2, 4, 6, 8, 10]" ) was "12, 0 => [0, 2, 4, 6, 8, 10, 12]". In other words, if you supply 10 and 2 to the function, it should return [2,...10], not [4,...8].

Doesn't make sense based on what they asked, but that's apparently what their final test setup checks for.

so you'd need to make your loops look more like:
for ( let i = y; i <= x, i++ ) {
if ( i%2 === 0 ) {...}
}

...which would probably make explicitly stating a conditional for the case of two identical numbers passed become a necessity.

Please help a brother. I need to iterate through [1,2] to return [2,2,1,1] as well as [2,3,5] to return [2,3,3,5,5]. I have tried several methods if it works for one it won't work for the other. I can try to implement any suggestions I get. thanks in anticipation

ttyman:



Please help a brother. I need to iterate through [1,2] to return [2,2,1,1] as well as [2,3,5] to return [2,3,3,5,5]. I have tried several methods if it works for one it won't work for the other. I can try to implement any suggestions I get. thanks in anticipation

try this

const number_game = (x, y) => {
if (x > y) {
let res = []
for (let i = y; i <= x; i++) res.push(i)
return res.filter(a => a%2 === 0)
}
let arr = [];
for (let i = x; i <= y; i++) arr.push(i)
return arr.filter(a => a%2===1)
}