let nameOne = 'chris|';
let nameTwo = 'christiana';
To use JavaScript, what is the best way to determine if three or more letters match between both variables?
let nameOne = 'chris|';
let nameTwo = 'christiana';
To use JavaScript, what is the best way to determine if three or more letters match between both variables?
If you are looking to determine whether a continuous series of at least n characters match in two strings, you can achieve this using a sliding window algorithm approach:
function checkMatchingCharacters(length, string1, string2) {
const [shorterStr, longerStr] = [string1, string2].sort(({length: a}, {length: b}) => a - b);
if (length > shorterStr.length) throw new Error('Invalid length');
if (length === shorterStr.length) return longerStr.includes(shorterStr);
for (let i = 0; i <= shorterStr.length - length; i += 1) {
const substring = shorterStr.slice(i, i + length);
if (longerStr.includes(substring)) return true;
}
return false;
}
const result = checkMatchingCharacters(3, 'christian|', 'christiana');
console.log(result);
console.log(checkMatchingCharacters(3, 'flagpole', 'poland'));
console.log(checkMatchingCharacters(3, 'yellow', 'orange'));
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