Isograms
- An isogram is a word that has no repeating letters consecutive or non-consecutive.
- Implement a function that determines whether a string that contains only letters is an isogram.
- Assume the empty string is an isogram.
- Ignore letter case.
Examples:
- "Dermatoglyphics" --> true
- "aba" --> false
- "moOse" --> false (ignore letter case)
My solution:
function isIsogramOne(str) {
let strLower = str.toLowerCase(); // convert to lowercase
let charArr = strLower.split(''); // split into array
let result = []; // create empty array to store unique characters
for (let i = 0; i < charArr.length; i++) { // loop through array
if (result.indexOf(charArr[i]) === -1) { // if chraacter is not in array
result.push(charArr[i]); // push character to array
}
}
return result.length === charArr.length;
}
Another solution:
function isIsogramTow(str) {
return str.toLowerCase().split('').filter((item, index, array) =>
array.indexOf(item) === index).length === str.length;
}
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Top comments (2)
Excellent solution bro :)