哔哩哔哩 BV、AV互转 Java版
从python移植的B站AV号BV号互转算法源码
private static String table = "fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF";
private static HashMap mp = new HashMap();
private static HashMap mp2 = new HashMap();
static int ss[] = {11, 10, 3, 8, 4, 6, 2, 9, 5, 7};
static long xor = 177451812;
static long add = 8728348608l;
public static void main(String[] args) {
System.out.println(b2v("BV1FE411c7co"));
System.out.println(v2b("av98464354"));
}
public static long power(int a, int b) {
long power = 1;
for (int c = 0; c < b; c++)
power *= a;
return power;
}
public static String b2v(String s) {
long r = 0;
for (int i = 0; i < 58; i++) {
String s1 = table.substring(i, i + 1);
mp.put(s1, i);
}
for (int i = 0; i < 6; i++) {
r = r + mp.get(s.substring(ss[i], ss[i] + 1)) * power(58, i);
}
return "av" + ((r - add) ^ xor);
}
public static String v2b(String st) {
long s = Long.valueOf(st.split("av")[1]);
StringBuffer sb = new StringBuffer("BV1 4 1 7 ");
s = (s ^ xor) + add;
for (int i = 0; i < 58; i++) {
String s1 = table.substring(i, i + 1);
mp2.put(i, s1);
}
for (int i = 0; i < 6; i++) {
String r = mp2.get((int) (s / power(58, i) % 58));
sb.replace(ss[i], ss[i] + 1, r);
}
return sb.toString();
}
花了点时间从python移植过来的。
作者：ty1937
