# Hamming distance

JavaScript, Math, Algorithm · Dec 28, 2020

Calculates the Hamming distance between two values.

- Use the XOR operator (
`^`

) to find the bit difference between the two numbers. - Convert to a binary string using
`Number.prototype.toString()`

. - Count and return the number of
`1`

s in the string, using`String.prototype.match()`

.

const hammingDistance = (num1, num2) => ((num1 ^ num2).toString(2).match(/1/g) || '').length; hammingDistance(2, 3); // 1