I've got an array with data which I would like sort/move to three different arrays.
The data in the array looks like this: data_array["101","08:00","45","102","08:00","46","102","08:00","47","101","08:01","46","102","08:01","45"] ...
The first data is an id, the second a time stamp and the third a temperature and then it start over. How can I do this?
This is my attempt:
var id = []
var time_stamp = []
var temperature = []
data_array = ["101","08:00","45","102","08:00","46","102","08:00","47","101","08:01","46","102","08:01","45"]
int counter = 1;
foreach(var item in data_array)
{
if(counter == 1)
{
vlan_id.push(item);
counter++;
}
else if (counter == 2)
{
time_stamp.push(item);
counter++;
}
else if (counter == 3)
{
temperature.push(item);
counter = 1;
}
}
You could take an index and increment for each part.
const
id = [],
time_stamp = [],
temperature = [],
data = ["101", "08:00", "45", "102", "08:00", "46", "102", "08:00", "47", "101", "08:01", "46", "102", "08:01", "45"];
let i = 0;
while (i < data.length) {
id.push(data[i++]);
time_stamp.push(data[i++]);
temperature.push(data[i++]);
}
console.log(...id);
console.log(...time_stamp);
console.log(...temperature);A slightly different approach
const
id = [],
time_stamp = [],
temperature = [],
data = ["101", "08:00", "45", "102", "08:00", "46", "102", "08:00", "47", "101", "08:01", "46", "102", "08:01", "45"],
targets = [id, time_stamp, temperature];
let i = 0;
while (i < data.length) {
targets[i % targets.length].push(data[i++]);
}
console.log(...id);
console.log(...time_stamp);
console.log(...temperature);Pretty much what you're doing is correct.
var id = []
var time_stamp = []
var temperature = []
const data_array = ["101","08:00","45","102","08:00","46","102","08:00","47","101","08:01","46","102","08:01","45"]
let counter = 1;
for(const d of data_array) {
if(counter === 1) {
id.push(d);
} else if(counter === 2) {
time_stamp.push(d);
} else if(counter === 3) {
temperature.push(d);
}
counter++;
if(counter > 3) counter = 1;
}
A potential solution using .reduce().
Code Snippet
const data_array = ["101", "08:00", "45", "102", "08:00", "46", "102", "08:00", "47", "101", "08:01", "46", "102", "08:01", "45"];
const {id, time_stamp, temperature} = data_array.reduce(
(acc, itm, idx) => ({ // iterate over array using ".reduce()"
...acc,
...( // based on "idx" add "itm" to "id", "time_stamp" or "temperature" arrays
idx % 3 === 0
? { id: acc.id.concat([itm]) }
: idx % 3 === 1
? { time_stamp: acc.time_stamp.concat([itm])}
: { temperature: acc.temperature.concat([itm])}
)
}), // initialize 'acc' with below object
{id: [], time_stamp: [], temperature: []}
);
console.log(
'id: ', ...id,
'\ntime_stamp: ', ...time_stamp,
'\ntemperature: ', ...temperature
);Explanation
Inline comments describe the significant aspects of the solution.