For example
object = {x:5, y:2, z:3}
The converted output will be:
['x','x','x','x','x','y','y','z', 'z', 'z']
For example
object = {x:5, y:2, z:3}
The converted output will be:
['x','x','x','x','x','y','y','z', 'z', 'z']
Retrieve data elements and create a flattened map with an array of a specified length, then populate the array with the corresponding key.
const
object = { x: 5, y: 2, z: 3 },
result = Object.entries(object)
.flatMap(([key, value]) => Array(value).fill(key));
console.log(result);One way to achieve this is by utilizing the reduce method in JavaScript:
const data = {apple: 3, banana: 2, cherry: 1};
const result = Object.keys(data).reduce((arr, key) => {
return arr.concat( new Array(data[key]).fill(key) );
}, []);
console.log(result); // ["apple", "apple", "apple", "banana", "banana", "cherry"]Explanation:
The Object.keys() method generates an array of all keys from the object: ["apple", "banana", "cherry"]
We iterate over each key using reduce, creating a new array for each key based on its value. We fill this array with the respective key (apple, banana, etc.).
Finally, we concatenate these arrays together using concat.
Give this a shot:
let myObj = { x:5, y:2, z:3 }
let newObjs = [];
for (var keys in myObj) {
while (myObj[keys]) {
newObjs.push(keys);
myObj[keys]--;
}
}
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