1.标题统计#includebits/stdc.h using namespace std; int main() { string s; getline(cin, s); cout s.size() endl; return 0; }2.⽯头剪⼦布#includebits/stdc.h using namespace std; int main() { int n; cinn; for(int i0; in; i) { string a,b; cinab;//读入两个字符串 if(a[0]b[0])coutTie\n;//首位相同平局 else if(a[0]R) { if(b[0]P)coutPlayer2\n; else coutPlayer1\n; } else if(a[0]P) { if(b[0]S)coutPlayer2\n; else coutPlayer1\n; } else if(a[0]S) { if(b[0]R)coutPlayer2\n; else coutPlayer1\n; }//以上是逐个判断按照 Player1 的情况分类讨论 //因为讨论过平局了可以只分两种情况考虑 //记得使用 else-if } return 0; }3.密码翻译#include bits/stdc.h using namespace std; int main() { string s; getline(cin, s); for (int i 0; i s.size(); i) { if (s[i] B s[i] Z) s[i]--; else if (s[i] A) s[i] Z; else if (s[i] b s[i] z) s[i]--; else if (s[i] a) s[i] z; } cout s endl; return 0; }4.⽂字处理软件#include bits/stdc.h using namespace std; int main() { int q; string s; cin q s; while (q--) { int op; cin op; if (op 1) { string str; cin str; s str; cout s endl; } else if (op 2) { int a, b; cin a b; s s.substr(a, b); cout s endl; } else if (op 3) { int a; string str; cin a str; s.insert(a, str); cout s endl; } else if (op 4) { string str; cin str; int pos s.find(str); cout pos endl; } } return 0; }5.单词的⻓度#includebits/stdc.h using namespace std; int main() { string s; cin s; cout s.size() endl; return 0; }6.单词翻转#includebits/stdc.h using namespace std; int main(){ string s; while(cin s){ reverse(s.begin(), s.end()); cout s endl; } return 0; }7.判断字符串是否为回⽂#includebits/stdc.h using namespace std; int main() { string s; cin s; bool ok true; int n s.size(); for (int i 0; i n / 2; i) { if (s[i] ! s[n - 1 - i]) ok false; } cout (ok ? YES : NO) endl; return 0; }8.⼿机#includebits/stdc.h using namespace std; int main() { string s; cin s; for (int i 0; i s.size(); i) { if (s[i] 0 s[i] 9) cout s[i]; } return 0; }9.⼝算练习题#includebits/stdc.h using namespace std; int main() { int a, b; char op; cin a op b; if (op ) cout a b endl; else if (op -) cout a - b endl; else if (op *) cout a * b endl; return 0; }