Openjudge 1.7 字符串

孤者浪人 提交于 2019-12-06 15:03:27

1.7.9 字母后移

读入一行的代码:

while((k=getchar())!=EOF)

ASCII码

小写\(a\) 97

小写\(z\) 122

大写\(A\) 65

大写\(Z\) 90

数字0 \(48\)

数字9 \(57\)

//1.7.9
#include<bits/stdc++.h>
using namespace std; 
int main()
{
    char p[85];
    char k;
    int i=0;
    while((k=getchar())!=EOF){
        if(k>=65&&k<=89) k++;
        else if(k==90) k=65;
        else if(k>=97&&k<=121) k++;
        else if(k==122) k=97;
        //else if(k==32) putchar('32');
        p[i]=k;
        i++;
        putchar(k); 
    }
    //puts(p);
    return 0;
}

1.7.11 潜伏者

//1.7.11?
#include <algorithm>
#include <iostream>
#include <cmath>
#include <cstdio>
#include <cstring>
using namespace std;
#define N 1020
char s1[N],s2[N],s3[N];
int a[26];
bool fail = 0;
int main(){
    scanf("%s%s%s",s1,s2,s3);
    for(int i=0;i<26;i++){
        a[i]=-1;
    }
    int len=strlen(s1);
    if(len<26) fail=1;
    else{
        for(int i=0;i<len;i++){
            if(a[s1[i]-'A'] == -1){
                a[s1[i]-'A']=s2[i]- 'A';
            }else{
                if(a[s1[i]-'A']!= s2[i]- 'A'){
                    fail = 1;
                    break;
                }
            }
        }
        for(int i = 0;i<26;i++){
            if(a[i]==-1){
                fail = 1;
                break;
            }
        }
        for(int i = 0;i<26;i++){
            for(int j=i+1;j<26;j++){
                if(a[i]==a[j]){
                    fail = 1;
                    break;
                }
            }
        }
    }
    if(fail == 1){
      cout<<"Failed"<<endl;
    }
    else{
        len = strlen(s3);
        for(int i = 0; i <len;++i)
            s3[i]=a[s3[i]-'A']+'A';
        printf("%s\n",s3);
    }
    return 0;
}

1.7.18 验证子串

#include <cstirng>
  strstr(a,b);

返回值是1或0,用于判断是否是子串

//1.7.18
#include <iostream>
#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cmath>
using namespace std;
char a[205],b[205];

int main( ){
    gets(a);
    gets(b);
    int len1,len2;
    len1=strlen(a);len2=strlen(b);
    bool op=0;
    if(len2>len1){
        swap(a,b);
        swap(len1,len2);
    }
    if(strstr(a,b)) printf("%s is substring of %s",b,a);
    else printf("No substring"); 
    return 0;
}

1.7.24 单词的长度

把下列语句修改一下就好了【这告诉我们\(<iostream>\)不可靠】
```
cout>>s>>" ,"; //原来

printf("%d,",s);//现在

有可能""(双引号)打成‘’(单引号)了一开始没发现
  
  所以还是$printf$吧
  

//1.7.24

include

include

include

include

using namespace std;
char a[2001];
int s=0;
int main(){
gets(a);
int l=strlen(a);
for(int i=0;i<l;i++)
{
if(a[i]!=' ') s++;
else if(a[i]==' '&&a[i-1]!=' ')
{
printf("%d,",s);
s=0;
}
}
cout<<s;
return 0;
}

# 1.7.29 $ISBN$号码
             
忘了$k==10$的特判‘$X$’

//1.7.29

include

include

include

include

using namespace std;
char a[15];
int b[15];
int k;
int main( ){
scanf("%s",a+1);
int j=1;
for(int i=1;i<=11;i++){
if(i==2||i==6) continue;
else {
k+=(a[i]-'0')*j;
j++;
}
}
//printf("%d\n",k);
k%=11;
if(k==10) k='X'-'0';
if(k==a[13]-'0') printf("Right");
else{
a[13]=k+'0';
printf("%s",a+1);
}
return 0;
}

重点!!!
                           

k%=11;
if(k==10) k='X'-'0';//关于字符之间的运算
if(k==a[13]-'0') printf("Right");
else{
a[13]=k+'0';
printf("%s",a+1);
}

# 1.7.32 行程缩写
                           
在程序内开数组,要memset要不然输出的数很怪

//1.7.32

include

include

include

include

include

using namespace std;
int main( ){
char s[1006];
scanf("%s",s+1);
int a[1010];
memset(a,0,sizeof(a));//!!
int len1;
len1=strlen(s+1);
for(int i=1;i<=len1;i++){
if(s[i]>='a'&&s[i]<='z') s[i]=s[i]-'a'+'A';
}
//printf("%s",s+1);
for(int i=1;i<=len1;i++){
if(s[i]==s[i+1]) a[s[i]-'A']++;
else {
printf("(%c,%d)",s[i],a[s[i]-'A']+1);
a[s[i]-'A']=0;
}
}
return 0;
}

             
# 1.7.35 字符串的展开

//1.7.35

include

include

include

include

include

using namespace std;
bool iszimu(char a){
if(a>='a'&&a<='z') return true;
return 0;
}
void solve(string &s,int p1,int p2,int p3){
if(p1==1)
{
for(int i=0;i<s.length();i++)
{
if(s[i]=='-')
{
if(iszimu(s[i-1])&&iszimu(s[i+1])&&s[i+1]>s[i-1]+1)
{
if(p3==1)
{
for(char temp = s[i-1]+1;temp<s[i+1];temp++)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
else
{
for(char temp = s[i+1]-1;temp>=s[i-1]+1;temp--)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
continue;
}
else if(isdigit(s[i-1])&&isdigit(s[i+1])&&s[i+1]>s[i-1]+1)
{
if(p3==1)
{
for(char temp = s[i-1]+1;temp<s[i+1];temp++)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
else
{
for(char temp = s[i+1]-1;temp>=s[i-1]+1;temp--)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
continue;
}
else if(s[i-1]>=s[i+1] ) cout<<'-';
else if(s[i-1]+1==s[i+1]);
else cout<<'-';//刚开始没有这个,如果s-2这种就会出错(少一个-)
}
else
cout<<s[i];
}
cout<<endl;
}
else if(p1==2)
{
for(int i=0;i<s.length();i++)
{
if(s[i]=='-')
{
if(iszimu(s[i-1])&&iszimu(s[i+1])&&s[i+1]>s[i-1]+1)
{
if(p3==1)
{
for(char temp = s[i-1]+1-('a'-'A');temp<s[i+1]-('a'-'A');temp++)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
else
{
for(char temp = s[i+1]-1-('a'-'A');temp>=s[i-1]+1-('a'-'A');temp--)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
continue;
}
else if(isdigit(s[i-1])&&isdigit(s[i+1])&&s[i+1]>s[i-1]+1)
{
if(p3==1)
{
for(char temp = s[i-1]+1;temp<s[i+1];temp++)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
else
{
for(char temp = s[i+1]-1;temp>=s[i-1]+1;temp--)
{
for(int j=0;j<p2;j++) cout<<temp;
}
}
continue;
}
else if(s[i-1]>=s[i+1] ) cout<<'-';
else if(s[i-1]+1==s[i+1]);
else cout<<'-';
}
else
cout<<s[i];
}
printf("\n");
}
else
{
for(int i=0;i<s.length();i++)
{
if(s[i]=='-')
{
if(iszimu(s[i-1])&&iszimu(s[i+1])&&s[i+1]>s[i-1]+1)
{
for(char temp = s[i-1]+1;temp<s[i+1];temp++)
{
for(int j=0;j<p2;j++) cout<<'';
}
continue;
}
else if(isdigit(s[i-1])&&isdigit(s[i+1])&&s[i+1]>s[i-1]+1)
{
for(char temp = s[i-1]+1;temp<s[i+1];temp++)
{
for(int j=0;j<p2;j++) cout<<'
';
}
continue;
}
else if(s[i-1]>=s[i+1] ) cout<<'-';
else if(s[i-1]+1==s[i+1]);
else cout<<'-';
}
else
cout<<s[i];
}
cout<<endl;
}
}
int main(){
int p1,p2,p3;
string s;
while(cin>>p1>>p2>>p3)
{
cin>>s;
solve(s,p1,p2,p3);
}
return 0;
}

# 最小公倍数·最大公因数
### 辗转相除法
重要定理:如果$a,b$的最大公因数和最小公倍数是$m,n$,那么$ab=mn$
  

include

include

include

using namespace std;
int gcd(int x,int y){
int r=x%y;
while(r!=0){
x=y;
y=r;
r=x%y;
}
return y;
}
int lcm(int x,int y){
return x*y/gcd(x,y);
}
int main( ){
int a,b;
printf("Please input two numbers a and b");
scanf("%d%d",&a,&b);
printf("a=%d,b=%d\n",a,b);
printf("gcd(%d,%d)=%d,lcm(%d,%d)=%d",a,b,gcd(a,b),a,b,lcm(a,b));
}
↑辗转相除法求最大公因数和最小公倍数 ### 以1.7.30字符环为例cpp
//1.7.30 字符环

include

include

include

include

using namespace std;
int gcd(int x,int y){
int r=x%y;
while(r!=0){
x=y;
y=r;
r=x%y;
}
return y;
}
int lcm(int x,int y){
return x*y/gcd(x,y);
}
int main( ){
char s1[260],s2[260];
scanf("%s%s",s1+1,s2+1);
int len1,len2;
len1=strlen(s1);len2=strlen(s2);

if(len2>len1){
    swap(len1,len2);
    swap(s1,s2);
}
int lengcd;
lengcd=gcd(len1,len2);
for(int i=1;i<=len1;i++){
    for(int j=1;j<=len1+len2,j++){
        int k=j%len2;
        while(s1[k])
    }
}

}
```

# 统计单词个数
```cpp

include

include

using namespace std;
char s[105];
int nw=1,count=0;
//way1
int main( ){
gets(s+1);
s[0]=' ';
int le=strlen(s+1);
//printf("%d \n",le);
for(int i=0;i<=le;i++){
if(s[i]==' '){
nw=1;
}
else{
if(nw==1){
nw=0;
count++;
}
}
// printf("%d %d %c\n",i,count,s[i]);
}
printf("%d",count);
return 0;
}
void way2( ){
gets(s);
for(int i=0;i<=101;i++){
if(s[i]=='\0'){
break;
}
if(s[i]==' '){
nw=1;
}
else{
if(nw==1){
nw=0;
count++;
}
}
//printf("%d %d %c\n",i,count,s[i]);
}
printf("%d",count);
return ;
}

include

include

include

using namespace std;
char sm[105];
char str[105];
int cnt=0;
void way3(){
stack < int > sp;
gets(sm);
int le=strlen(sm);
sp.push(0);//事先压入空格
for(int i=0;i<le;i++){
if(sm[i]!=' ') sp.push(sm[i]-'0');
else sp.push(0);//处理字符串
}
while(sp.size()!=0){
char tmp;
tmp=sp.top();
if(tmp==0) cnt++;
sp.pop();//统计
}
printf("%d",cnt);
return ;
}
```

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