P1079 Vigenère 密码
noip2012提高day1T1
大概就是把题目中的表存进去然后就没了qaq
1 #include<cstdio> 2 #include<cstring> 3 #include<iostream> 4 using namespace std; 5 char s[30][30]; 6 char k[110], m[1010]; 7 int lenm, lenk; 8 bool flam[1010]; 9 void init() { 10 for(int i = 1; i <= lenk; i++) { 11 int mid = (int)(k[i]); 12 if(mid>=65&&mid<=90) k[i] += 32; 13 } 14 for(int i = 1; i <= lenm; i++) { 15 int mid = (int)(m[i]); 16 if(mid>=65&&mid<=90) { 17 flam[i] = 1; 18 m[i] += 32; 19 } 20 } 21 } 22 void get_list() { 23 for(int i = 1; i <= 26; i++) { 24 char c = 'a'+i-1; 25 s[i][1] = c; 26 for(int j = 2; j <= 26; j++) { 27 s[i][j] = c+1; 28 c = s[i][j]; 29 if(c >= 'z') c -= 26; 30 } 31 } 32 } 33 void work() { 34 int mm; 35 for(int i = 1; i <= lenm; i++) { 36 mm = i % lenk; 37 if(mm==0) mm = lenk; 38 for(int j = 1; j <= 26; j++) { 39 if(s[(int)(k[mm]-96)][j] == m[i]) { 40 if(flam[i]) cout<<(char)(j+64); 41 else cout<<(char)(j+96); 42 } 43 } 44 } 45 } 46 int main() { 47 get_list(); 48 scanf("%s%s",k+1, m+1); 49 lenm = strlen(m+1); 50 lenk = strlen(k+1); 51 init();//刚开始把它写在了上两行前面qaq然后就出现了密文中大写字母明文无输出的情况orz 52 work(); 53 return 0; 54 }
说好了昨天刷dp结果把洛谷上所有noip真题入门难度的做完了QAQ
今天是不是该普及-惹qaq