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Segregating a string into substrings - JavaScript
We are required to write a JavaScript function that takes in a string and a number n as two arguments (the number should be such that it exactly divides the length of string) and we have to return an array of n strings of equal length.
For example −
If the string is "how" and the number is 2, our output should be −
["h", "o", "w"];
Here, every substring exactly contains −
(length of array/n) characters
And every substring is formed by taking corresponding first and last letters of the string alternatively.
Example
Following is the code −
const str = "how";
const num = 3;
const segregate = (str, n) => {
if(str.length % n !== 0){
return false;
}
const len = str.length / n;
const strArray = str.split("");
const arr = [];
let i = 0, char;
while(strArray.length){
if(i % 2 === 0){
char = strArray.shift();
}else{
char = strArray.pop();
};
if(i % len === 0){
arr[i / len] = char;
}else{
arr[Math.floor(i / len)] += char;
};
i++;
};
return arr;
};
console.log(segregate(str, num));Output
This will produce the following output in console −
[ 'h', 'w', 'o' ]
Updated on: 18-Sep-2020
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