hammingDistance static 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

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