卡bin校验主要算法
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/**
a i5J`D3ag3S0 * 生成银行卡校验码(2121算法)
:bnJ.AE0 *
:zEr \9D [t0 * @param cardNumber51Testing软件测试网z'O;?c0L
* - 卡号
't!jyjg#cI0 * @param size
A8` bZ XqDc0 * - 卡号扣除卡号校验码的长度
8v&A eD!]8g5h0 * @return51Testing软件测试网 G&gKo:c%hp
*/
b*JGx?0 public static int LuhnMod10(String cardNumber, int size) {51Testing软件测试网+Z9U"j |3[ t:aN ?"q
int[][] table = { { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },51Testing软件测试网LU4Y%o Q*B-fS
{ 0, 2, 4, 6, 8, 1, 3, 5, 7, 9 } };51Testing软件测试网8U z/f8{v b9?
;51Testing软件测试网!GJ8[ HsT
int sum = 0;51Testing软件测试网,_0gPN/oZA#V9y
for (int i = size - 1, dd = 0; i >= 0; i--) {
1p SG/\*J K0 sum += table[(odd = 1 - odd)][cardNumber.charAt(i) - '0'];51Testing软件测试网3qcQ@yo7^
}
%s/NAN;Ylr0 sum = sum % 10;
7DExN"~*t0 return (sum == 0 ? 0 : 10 - sum); /* return the check digit */51Testing软件测试网`*Aj!W-\%fGE9}.m
}
8@q w.M!~7d:IN p{051Testing软件测试网\\M8QlW\
public static boolean checkCardIn2121(String cardno) {51Testing软件测试网%Qr _6j?p&C SI-lG~
if (cardno == null) {51Testing软件测试网3bYdHHA\'S$CQ
return false;51Testing软件测试网7?;T_"_0Z"})[n-i
}51Testing软件测试网:e7Y Yj-w*lp!g
if (cardno.length() >= 7) {51Testing软件测试网t9z2L7``u(n8GQD
int lrc = LuhnMod10(cardno, cardno.length() - 1);51Testing软件测试网3s-G0Tk'sJJ
if ((cardno.charAt(cardno.length() - 1) - '0') != lrc) {
?["X|8w0 return false;
{wz$R\:Nw0 } else {51Testing软件测试网$q0ubF f9W7p&v Z aJ|{
return true;51Testing软件测试网%JJ.O:v` w~
}
.C8|/oIU:d7m#i6J0 }
a i5J`D3ag3S0 * 生成银行卡校验码(2121算法)
:bnJ.AE0 *
:zEr \9D [t0 * @param cardNumber51Testing软件测试网z'O;?c0L
* - 卡号
't!jyjg#cI0 * @param size
A8` bZ XqDc0 * - 卡号扣除卡号校验码的长度
8v&A eD!]8g5h0 * @return51Testing软件测试网 G&gKo:c%hp
*/
b*JGx?0 public static int LuhnMod10(String cardNumber, int size) {51Testing软件测试网+Z9U"j |3[ t:aN ?"q
int[][] table = { { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },51Testing软件测试网LU4Y%o Q*B-fS
{ 0, 2, 4, 6, 8, 1, 3, 5, 7, 9 } };51Testing软件测试网8U z/f8{v b9?
;51Testing软件测试网!GJ8[ HsT
int sum = 0;51Testing软件测试网,_0gPN/oZA#V9y
for (int i = size - 1, dd = 0; i >= 0; i--) {
1p SG/\*J K0 sum += table[(odd = 1 - odd)][cardNumber.charAt(i) - '0'];51Testing软件测试网3qcQ@yo7^
}
%s/NAN;Ylr0 sum = sum % 10;
7DExN"~*t0 return (sum == 0 ? 0 : 10 - sum); /* return the check digit */51Testing软件测试网`*Aj!W-\%fGE9}.m
}
8@q w.M!~7d:IN p{051Testing软件测试网\\M8QlW\
public static boolean checkCardIn2121(String cardno) {51Testing软件测试网%Qr _6j?p&C SI-lG~
if (cardno == null) {51Testing软件测试网3bYdHHA\'S$CQ
return false;51Testing软件测试网7?;T_"_0Z"})[n-i
}51Testing软件测试网:e7Y Yj-w*lp!g
if (cardno.length() >= 7) {51Testing软件测试网t9z2L7``u(n8GQD
int lrc = LuhnMod10(cardno, cardno.length() - 1);51Testing软件测试网3s-G0Tk'sJJ
if ((cardno.charAt(cardno.length() - 1) - '0') != lrc) {
?["X|8w0 return false;
{wz$R\:Nw0 } else {51Testing软件测试网$q0ubF f9W7p&v Z aJ|{
return true;51Testing软件测试网%JJ.O:v` w~
}
.C8|/oIU:d7m#i6J0 }