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Distance to nearest vowel in a string - JavaScript
We are required to write a JavaScript function that takes in a string with atleast one vowel, and for each character in the string we have to map a number in a string representing its nearest distance from a vowel.
For example: If the string is −
const str = 'vatghvf';
Then the output should be −
const output = [1, 0, 1, 2, 3, 4, 5];
Example
Following is the code −
const str = 'vatghvf';
const nearest = (arr = [], el) => arr.reduce((acc, val) => Math.min(acc,
Math.abs(val - el)), Infinity);
const vowelNearestDistance = (str = '') => {
const s = str.toLowerCase();
const vowelIndex = [];
for(let i = 0; i < s.length; i++){
if(s[i] === 'a' || s[i] === 'e' || s[i] === 'i' || s[i] === 'o' ||
s[i] === 'u'){
vowelIndex.push(i);
};
};
return s.split('').map((el, ind) => nearest(vowelIndex, ind));
};
console.log(vowelNearestDistance(str));Output
Following is the output in the console −
[ 1, 0, 1, 2, 3, 4, 5 ]
Updated on: 16-Sep-2020
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