The first topic is as follows:
/* * * * * * Assuming that the original one BBS password for zvbo9441987, in order to facilitate memory, he through an algorithm to transform this password into YUANzhi1987, * This password is his name and year of birth, how to forget to forget, And can be blatantly placed in a conspicuous place without being known to the real password. * * He's so changed, everybody knows the letters on the phone: 1--1, Abc--2, def--3, ghi--4, jkl--5, mno--6, pqrs--7, * tuv--8 wxyz--9, 0--0, that's it. The lowercase letters that appear in the code become the corresponding numbers, and the numbers and other symbols do not change, * */
First of all to analyze the topic, the first must be to distinguish between the case and the number, the distinction, the previous blog has been mentioned, the rest is the capitalization into lowercase, lowercase change the number, in fact, it is so simple. Here's the code:
1 Public classKillpassword {2 3 Public Static voidMain (string[] args) {4Scanner sc =NewScanner (system.in);5String Password =sc.nextline ();6 Char[] Chararray =Password.tochararray ();7 Char[] Newpasswordarray =New Char[chararray.length];8 for(inti = 0;i<chararray.length;i++){9 intnum =Judgetype (Chararray[i]);Ten if(num = = 1){ One Charc =Big2small (Chararray[i]); ANewpasswordarray[i] =C; -}Else if(num = = 0){ - Charc =Small2num (Chararray[i]); theNewpasswordarray[i] =C; -}Else{ -Newpasswordarray[i] =Chararray[i]; - } + } - System.out.println (newpasswordarray); + } A at Public Static intJudgetype (Charc) { - - if(c >= ' A ' && C <= ' Z '){ - return1; -}Else if(c >= ' a ' && c<= ' z '){ - return0; in}Else{ - return10; to } + } - the Public Static CharSmall2num (Charc) { * Switch(c) { $ CaseA:Panax Notoginseng Case' B ': - CaseC: the return' 2 '; + Case' d ': A CaseE: the Case' F ': + return' 3 '; - Case' G ': $ Case' H ': $ CaseI: - return' 4 '; - Case' J ': the CaseK: - CaseL:Wuyi return' 5 '; the Case' m ': - CaseN: Wu Case' O ': - return' 6 '; About Case' P ': $ Case' Q ': - Case' R ': - Case' s ': - return' 7 '; A Case' t ': + Case' U ': the Case' V ': - return' 8 '; $ Case' W ': the Case' X ': the Case' Y ': the Case' Z ': the return' 9 '; - default: in return' 0 '; the } the } About Public Static CharBig2small (Charc) { the Char[] small = { the' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' g ', ' H ', the' I ', ' j ', ' K ', ' l ', ' m ', ' n ', ' o ', ' P ', +' Q ', ' R ', ' s ', ' t ', ' u ', ' V ', ' w ', ' x ', -' Y ', ' z ' the };Bayi Char[] Big = { the' A ', ' B ', ' C ', ' D ', ' E ', ' F ', ' G ', ' H ', the' I ', ' J ', ' K ', ' L ', ' M ', ' N ', ' O ', ' P ', -' Q ', ' R ', ' S ', ' T ', ' U ', ' V ', ' W ', ' X ', -' Y ', ' Z ' the }; the for(inti = 0;i<big.length;i++) the if(c = =Big[i]) { the if(c = = ' Z ') - returnA; the Else the returnSmall[i + 1]; the }94 return' 0 '; the } the}
New Ket Huawei Online Programming problem----simple password hack