week_2_day1_7.7 周一
//用字符数组 来实现 字母大小写转换
#include<stdio.h>
void desc( char *a ,int n)
{
char *i = a;
int x = 0 ;
for ( x = 0; x < n ;x ++ )
{
if ( *i >= 97 )
*i-=32;
i++;
}
}
int main(void)
{
void desc(char *num, int n);//必须在函数内部声明
char num[100], a;
int i = 0, k = 0;
while((a = getchar ())!= ‘\n‘){
num[i] = a;
i++;
}
desc(num,i);
for (k = 0; k < i; k ++) {
printf("%c",num[k]);
}
return 0;
}
//大数字加法
#include <stdio.h>
int main(int argc, const char * argv[])
{
int a[1001] = {},b[1001] = {} , c[1001] = {} ;
int i , j= 0 , k1 = 0 ,k2 = 0 ,count1 = 0 , count2 = 0;
char ch , ch1 = ‘0‘;
for (i = 1; (ch = getchar()) != ‘ ‘ ; i ++) {
j = ch - ch1;
a[i] = j;
}//第一个大数字
k1 =i - 1;
for (i = 1; (ch = getchar()) != ‘\n‘ ; i ++) {
j = ch - ch1;
b[i] = j;
}//第二个大数字
k2 = i - 1 ;
if (k1 > k2) {
count1 = k1;
count2 = k2;
}
else{ count1 = k2;
count2 = k1;
}
for ( i = count1 ; i > 0 ; i --,k1 --, k2 -- ) {//加法
if (k2 <= 0)
c[i] += a[k1];//判断是否 那个比较小的数字 是否已经加完
else if ( k1 <= 0)
c[i] += a[k2];
else{
c[i] += (a[k1] + b[k2]);
if (c[i] > 9)
{
c[i] %= 10;
c[i-1] = 1;//是否进位
}
}
}
if (c[0] == 1)
printf("%d",c[0]);
for ( i = 1 ; i <= count1 ; i ++ )
printf("%d",c[i]);
printf("\n");
return 0;
}
//n!的位数 暂时不是太懂
#include <stdio.h>
#include <math.h>
int factorial(int n)
{
long a[10000];
int i,j,c,m=0,w,l = 0;
a[0]=1;
for(i=1;i<=n;i++)
{
c=0;
for(j=0;j<=m;j++)
{
a[j]=a[j]*i+c;
c=a[j]/10000;
a[j]=a[j]%10000;
}
if(c>0) {m++;a[m]=c;}
}
w=m*4+log10(a[m])+1;
// printf("\n%ld",a[m]);
// for(i=m-1;i>=0;i--)
// printf("%4.4ld\n",a[i]);
return w;
}
int main(int argc, const char * argv[])
{
int x;
scanf("%d",&x);
x=factorial(x);
printf("%d",x);
return 0;
}
//拔河比赛分配方案
//就是用随机函数确定那个人 在那一队，然后比较那一队和总体重相差小，就输出他。
#include<stdio.h>
#include <stdlib.h>
#include <sys/_types/_mode_t.h>
int swap(int *a, int j);
int swap(int *a , int j)
{
int min = 0, b ,s = 0 , sum = 0;
int c[100] = {};
for ( int i = 0; i < j ; i ++ ) {
sum += a[i];
}//总人数的 体重
printf("总体重：%d\n",sum);
for ( int h = 0; h < j; h ++)
{
c[h] = -1;
}
for ( int i = 0; i < 10000; i ++)
{
for ( int n = 0; n < j/2; n ++)
{
AA:
b = abs(arc4random()%(j));
for ( int h = 0; h < n; h ++)
{
if (c[h] == b)
{
goto AA;
}
}
c[n] = b;
s += a[b];
}
for ( int h = 0; h < j; h ++)
{
c[h] = -1;
}//重置 保存的 已经有用的数据
if (abs(sum/2 - min) > abs(sum/2 - s) ) {
min = s ;
}
s = 0;
}
return min;
}
int main(void)
{
int a ,ch[100],sum = 0 ;
printf("请输入拔河比赛的总人数：");
scanf("%d",&a);
for ( int i =0; i < a; i ++)
{
printf("请输入第%d个人：",i+1);
scanf("%d",&ch[i]);
}
int min = swap(ch, a);
for ( int i = 0; i < a ; i ++ ) {
sum += ch[i];
}
printf("比较轻的队伍：%d\n",min);
printf("比较重的队伍：%d\n",sum-min);
//printf("%d\n",a, j);
return 0 ;
}
//将n向右循环a位 然后输出
#include <stdio.h>
int ch[32] = {} , ch_l[32] = {};
void printfArry( int *a , int b);//输出数组
int * del_num( long a);//分解数字为2进制 存进数组
int * Toright( int * p, int m);//向右移动
int To_arry_num( int k);//每个数组应该加的2的k次幂
int To_sum( int *p ,int h);//最后输出的 转换后的 数字
void printfArry( int *a , int b){
int i = 0 ;
for ( i = 0 ; i < b; i ++) {
printf("%d\t",a[i]);
}
}
int * del_num( long a){
int i = 0;
for ( i = 0; a > 0; i ++ )
{
if ( a %2 == 0) {
ch[ 31 - i] = 0;
}
else{
ch[ 31 - i] = 1;
}
a /= 2 ;
}
return ch ;
}
int * Toright( int * p, int m)
{
int i = 0 , k = 31 , j ;
for ( i = 31- m; i >=0; k-- ,i --)
{
ch_l[k] = p[i];
}
for ( j = 31 ; j >31 - m ; k -- ,j --) {
ch_l[k] = p[j];
}
return ch_l;
};
int To_arry_num(int k){
int i = 0 , s=1;
for ( ; i < k ; i ++) {
s *= 2 ;
}
return s;
}
int To_sum( int *p , int h){
int sum = 0 , i = 0;
for ( i = 0; i < h; i ++ )
{
if ( p[i] == 1)
{
sum += To_arry_num( 31-i);
}
}
return sum;
}
int main(int argc, const char * argv[])
{
long a ;
int *p , m = 0;
scanf("%ld",&a);
scanf("%d",&m);
// printf("%ld\n",a);
if ( a == -1) {
printf("-1");
}
else
{
p =del_num(a);//分解数字为2进制
p=Toright(p, m);
printfArry(p,32);
printf("\n");
a = To_sum(p, 32);
printf("%ld\n",a);
}
return 0;
}
//循环左边移动 n位
#include <stdio.h>
int ch[32] = {} , ch_l[32] = {};
void printfArry( int *a , int b);
int * del_num( long a);
int * Toleft( int * p, int m);
int To_arry_num( int k);
int To_sum( int *p ,int h);
void printfArry( int *a , int b){
int i = 0 ;
for ( i = 0 ; i < b; i ++) {
printf("%d",a[i]);
}
}
int * del_num( long a){
int i = 0;
for ( i = 0; a > 0; i ++ )
{
if ( a %2 == 0) {
ch[ 31 - i] = 0;
}
else{
ch[ 31 - i] = 1;
}
a /= 2 ;
}
return ch ;
}
int * Toleft( int * p, int m)
{
int i = 0 , k = 31 - m ;
for ( i = 31 ; k == 0 ; k-- ,i --)
{
ch_l[k] = p[i];
}
for ( k = 31 -m ; i >= 0; k -- ,i --) {
ch_l[k] = p[i];
}
return ch_l;
};
int To_arry_num(int k){
int i = 0 , s=1;
for ( ; i < k ; i ++) {
s *= 2 ;
}
return s;
}
int To_sum( int *p , int h){
int sum = 0 , i = 0;
for ( i = 0; i < h; i ++ )
{
if ( p[i] == 1)
{
sum += To_arry_num( 31-i);
}
}
return sum;
}
int main(int argc, const char * argv[])
{
long a ;
int *p , m = 0;
scanf("%ld",&a);
scanf("%d",&m);
// printf("%ld\n",a);
if ( a == -1) {
printf("-1");
}
else
{
if ( m != 32)
{
p =del_num(a);//分解数字为2进制
p=Toleft(p, m);
// printfArry(p,32);
printf("\n");
a = To_sum(p, 32);
printf("%ld\n",a);
}else
{
printf("%d",a);
}
}
return 0;
}
//实现一个按照ID进行排序的链表，并按有序的方式初始化链表中的结点，然后实现向链表中插入一个新结点，在插入完成后，不会破坏链表的排序。
#include <stdio.h>
//#include<malloc.h>
#include <stdlib.h>
#define LEN sizeof(struct stu)
struct stu {
int id;
char a[1];
struct stu *next;
};
int n;
struct stu* c(void){//创建链表
struct stu *head ;
struct stu *p1,*p2;
n = 0;
p1 =p2 =(struct stu*)malloc(LEN);
scanf("%d%c",&p1->id,&p1->a[0]);
head = NULL ;
do{
n += 1;
if ( n == 1) head = p1;
else p2->next = p1;
p2 = p1;
if(p2->a[0] == ‘\n‘ )
break;
p1 = (struct stu *)malloc(LEN);
scanf("%d%c",&p1->id,&p1->a[0]);
p2 -> next = NULL;
}while (1);
return (head);
}
int main(int argc, const char * argv[])
{
struct stu *p ,*p3, *p4,*p5;
p = c();
p5 = p;
p3=(struct stu *)malloc(LEN);
scanf("%d",&p3->id);
p4=p->next;
while (1) {
if ( (p4 ->id) < (p->id) ) {
if ( p3->id >p4->id && p3->id < p->id)
{
p3->next = p4;
p->next = p3;//插入一个指针
break;
}
else
{
p = p4;
p4 = p4->next;//向后边移动一个地址
}
}
if ( p4 ->id > p->id)
{
if (p3->id > p->id && p3->id < p4->id)
{
p3->next = p4;
p->next = p3;//向后边移动一个地址
break;
}
else
{
p = p4;//向后边移动一个地址
p4 = p4->next;
}
}
}
while (p5 != NULL) {
printf("%d",p5->id);
p5 = p5->next;
}
printf("\n");
return 0;
}
c 指针 及其位运算循环移动拔河比赛问题代码