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Hamming Distance in JavaScript

  1. function hamming(a, b) {
  2.   const leng = a.length
  3.   let dist = 0
  4.  
  5.   // strings need to be same length
  6.   if (leng != b.length) return -1;
  7.  
  8.   a = a.toLowerCase()
  9.   b = b.toLowerCase()
  10.  
  11.   for (let i = 0; i < leng; i++)
  12.     if (a[i] !== b[i]) dist++
  13.  
  14.   return dist
  15. }
  16.  
  17. console.log(hamming('zevan', 'kevin'))
  18. console.log(hamming('joe', 'joe'))
  19. console.log(hamming('john', 'jake'))

The hamming distance between two strings…

snippet.zone ~ 2021-22 /// {s/z}