hammingDistance method

int hammingDistance(
  1. String str1,
  2. String str2
)

比较两个长度一样的字符串有几个字符不同

Implementation

int hammingDistance(String str1, String str2) {
  if (str1.length != str2.length) {
    throw FormatException('Strings must have the same length');
  }
  var l1 = str1.runes.toList();
  var l2 = str2.runes.toList();
  var distance = 0;
  for (var i = 0; i < l1.length; i++) {
    if (l1[i] != l2[i]) {
      distance++;
    }
  }
  return distance;
}