Python123第八章答案（自写，仅供参考) By：肇院伟烨
前言
1、代码自己写的，不是标准答案，仅供参考。
2、建议看懂后自己另外写而不是复制粘贴。
3、点击目录可以转跳
文章目录
第八章
第1题
#include <stdio.h>
#include<string.h>
#define MAX_LEN 100
#define LEN 5
char str[LEN][MAX_LEN];
char* order[LEN] = {0};
int size=0 , end_number;
void insert(int i)
{
if (i == 0)
{
order[i] = str[i];
size++;
}
else
{
end_number = size - 1;
while (end_number >= 0 && strcmp(order[end_number], str[i]) > 0)
{
order[end_number + 1] = order[end_number];
end_number--;
}
order[end_number + 1] = str[i];
size++;
}
}
int main()
{
int i, b;
for (i = 0; i <5; i++)
{
scanf("%s", str[i]);
insert(i);
}
printf("After sorted:\n");
for (i = 0; i <5; i++)
{
printf(order[i]);
if (i != 4)
{
putchar('\n');
}
}
return 0;
}
第2题
#include <stdio.h>
#include<stdlib.h>
int main()
{
float* p;
int i, n;
scanf("%d", &n);
p = (float*)malloc(n * sizeof(float));
if (p == NULL)
exit(1);
float sum = 0, average;
int max = 0, min = 0;
for (i = 0; i < n; i++)
{
scanf("%f", &p[i]);
sum += p[i];
if (p[i] > p[max])
max = i;
if (p[i] < p[min])
min = i;
}
average = sum / n;
printf("average = %.2f\nmax = %.2f\nmin = %.2f\n", average, p[max], p[min]);
free(p);
p = NULL;
return 0;
}
第3题
#include <stdio.h>
void sum_diff(float op1, float op2, float* psum, float* pdiff);
int main()
{
float a, b, sum, diff;
scanf("%f %f", &a, &b);
sum_diff(a, b, &sum, &diff);
printf("The sum is %.2f\nThe diff is %.2f\n", sum, diff);
return 0;
}
void sum_diff(float op1, float op2, float* psum, float* pdiff)
{
*psum = op1 + op2;
*pdiff = op1 - op2;
}
第4题
#include <stdio.h>
#include <string.h>
int main()
{
int i,n;
char str[100],a,b,c;
gets(str);
a=str[0];
b=str[1];
c=str[2];
for(i=0;str[i+3]!='\0';i++)
{
str[i]=str[i+3];
}
str[i]=a;
str[i+1]=b;
str[i+2]=c;
str[i+3]='\0';
puts(str);
return 0;
}
第5题
#include <stdio.h>
void splitfloat( double x, int *intpart, double *fracpart );
int main()
{
double x, fracpart;
int intpart;
scanf("%lf", &x);
splitfloat(x, &intpart, &fracpart);
printf("The integer part is %d\n", intpart);
printf("The fractional part is %g\n", fracpart);
return 0;
}
void splitfloat( double x, int *intpart, double *fracpart )
{
*intpart=x;
*fracpart=x-*intpart;
}
第6题
#include<stdio.h>
#define MAX 100
int arr[MAX];
int search(int list[], int n, int x);
int main()
{
int i,n,number, x;
scanf("%d", &n);
for (i = 0; i < n; i++)
{
scanf("%d", &arr[i]);
}
scanf("%d", &x);
if (search(arr, n, x) == -1)
printf("Not found");
else
printf("index = %d", search(arr, n, x));
return 0;
}
int search(int list[], int n, int x)
{
int i;
for (i = 0; i < n; i++)
if (list[i] == x)
{
return i;
break;
}
if (i == n)
return -1;
}
第7题
#include <stdio.h>
#define MAXN 10
int ArrayShift(int a[], int n, int m);
int main()
{
int a[MAXN], n, m;
int i;
scanf("%d %d", &n, &m);
for (i = 0; i < n; i++)
scanf("%d", &a[i]);
ArrayShift(a, n, m);
for (i = 0; i < n; i++)
{
if (i != 0)
printf(" ");
printf("%d", a[i]);
}
printf("\n");
return 0;
}
int ArrayShift(int a[], int n, int m)
{
int swap,i,j;
for (i = 1; i <= m; i++)
{
swap = a[n - 1];
for (j = n - 1; j > 0; j--)
a[j] = a[j-1];
a[0] = swap;
}
return 0;
}
第8题
#include <stdio.h>
#define MAXN 20
void CountOff(int n, int m, int out[]);
int main()
{
int out[MAXN], n, m;
int i;
scanf("%d %d", &n, &m);
CountOff(n, m, out);
for (i = 0; i < n; i++)
printf("%d ", out[i]);
printf("\n");
return 0;
}
void CountOff(int n, int m, int out[])
{
int i = 0, j = 1, count = 0;
for (i = 0; i < n; i++)
{
out[i] = 0;
}
i = 0;
while (j <= n)
{
for (i = 1; i <= n; i++)
{
if (out[i - 1] == 0)
{
count++;
}
if (out[i - 1] == 0 && count == m)
{
out[i - 1] = j;
j++;
count = 0;
}
}
}
}
第9题
#include <stdio.h>
#define MAXN 100
void strmcpy( char *t, int m, char *s );
void ReadString( char s[] );
int main()
{
char t[MAXN], s[MAXN];
int m;
scanf("%d\n", &m);
ReadString(t);
strmcpy( t, m, s );
printf("%s\n", s);
return 0;
}
void ReadString( char s[] )
{
gets(s);
}
void strmcpy( char *t, int m, char *s )
{
int i,len=0,j=0;
for(i=0;t[i]!='\0';i++)
{
len++;
}
if(m>len)
{
s[0]='\0';
}
else
{
for(i=m-1;i<len;i++)
{
s[j]=t[i];
j++;
}
s[j]='\0';
}
}
第10题
#include <stdio.h>
#include <string.h>
#define MAXN 20
void delchar( char *str, char c );
void ReadString( char s[] );
int main()
{
char str[MAXN], c;
scanf("%c\n", &c);
ReadString(str);
delchar(str, c);
printf("%s\n", str);
return 0;
}
void ReadString( char s[] )
{gets(s);}
void delchar( char *str, char c )
{
int i,j=0;
char str1[MAXN];
for(i=0;str[i]!='\0';i++)
{
if(str[i]!=c)
{
str1[j]=str[i];
j++;
}
}
str1[j]='\0';
strcpy(str,str1);
}
第11题
#include <stdio.h>
#include <string.h>
#define MAXN 20
typedef enum {
false, true}
bool;
bool palindrome( char *s );
int main()
{
char s[MAXN];
scanf("%s", s);
if ( palindrome(s)==true )
printf("Yes\n");
else
printf("No\n");
printf("%s\n", s);
return 0;
}
bool palindrome( char *s )
{
int end,star=0;
end=strlen(s)-1;
while(1)
{
if(s[star]!=s[end])
return false;
else
star++;
end--;
if(star>end)
return true;
}
}
第12题
#include <stdio.h>
#include<ctype.h>
#define MAXS 15
void StringCount(char* s);
void ReadString(char* s);
int main()
{
char s[MAXS];
ReadString(s);
StringCount(s);
return 0;
}
void ReadString(char* s)
{
int i = 0;
while (scanf("%c", s + i) && s[i] != '~')
{
i++;
}
s[i] = '~';
s[i + 1] = '\0';
}
void StringCount(char* s)
{
int i = 0,upper=0,lower=0,blank=0,digit=0,other=0;
while (s[i] != '\0')
{
if (isupper(s[i]))
upper++;
else if (islower(s[i]))
lower++;
else if (s[i]==' ')
blank++;
else if (isdigit(s[i]))
digit++;
else
other++;
i++;
}
printf("%d %d %d %d %d", upper,lower, blank, digit, other);
}
第13题
#include <stdio.h>
#define MAXN 10
int ArrayShift(int a[], int n, int m);
int main()
{
int a[MAXN], n, m;
int i;
scanf("%d %d", &n, &m);
for (i = 0; i < n; i++)
scanf("%d", &a[i]);
ArrayShift(a, n, m);
for (i = 0; i < n; i++)
{
if (i != 0)
printf(" ");
printf("%d", a[i]);
}
printf("\n");
return 0;
}
int ArrayShift(int a[], int n, int m)
{
int swap,i,j;
for (i = 1; i <= m; i++)
{
swap = a[n - 1];
for (j = n - 1; j > 0; j--)
a[j] = a[j-1];
a[0] = swap;
}
return 0;
}
第14题
#include <stdio.h>
#include <string.h>
#define MAXN 20
int palindrome( char *s );
int main()
{
char s[MAXN];
scanf("%s", s);
if ( palindrome(s)==1 )
printf("Yes\n");
else
printf("No\n");
printf("%s\n", s);
return 0;
}
int palindrome( char *s )
{
int end,star=0;
end=strlen(s)-1;
while(1)
{
if(s[star]!=s[end])
return 0;
star++;
end--;
if(star>end)
return 1;
}
}