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How can I split an array of Numbers to individual digits in JavaScript?
We have an array of Number literals, and we are required to write a function, say splitDigit() that takes in this array and returns an array of Numbers where the numbers greater than 10 are splitted into single digits.
For example −
//if the input is: const arr = [ 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106 ] //then the output should be: const output = [ 9, 4, 9, 5, 9, 6, 9, 7, 9, 8, 9, 9, 1, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 0, 4, 1, 0, 5, 1, 0, 6 ];
So, let’s write the code for this function, we will use the Array.prototype.reduce() method to split the numbers.
Example
const arr = [ 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106 ]
const splitNum = (n, res = []) => {
if(n){
return splitNum(Math.floor(n/10), [n % 10].concat(res));
};
return res;
};
const splitDigit = (arr) => {
return arr.reduce((acc, val) => acc.concat(splitNum(val)), []);
};
console.log(splitDigit(arr));Output
The output in the console will be −
[ 9, 4, 9, 5, 9, 6, 9, 7, 9, 8, 9, 9, 1, 0, 0, 1, 0, 1, 1, 0, 2, 1, 0, 3, 1, 0, 4, 1, 0, 5, 1, 0, 6 ]
Updated on: 25-Aug-2020
414 Views
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