Andy, 8, has a dream - he wants to produce his very own dictionary. This is not an easy task for him, as the number of words that he knows is, well, not quite enough. Instead of thinking up all the words himself, he has a briliant idea. From his bookshelf
he would pick one of his favourite story books, from which he would copy out all the distinct words. By arranging the words in alphabetical order, he is done! Of course, it is a really time-consuming job, and this is where a computer program is helpful.
You are asked to write a program that lists all the different words in the input text. In this problem, a word is defined as a consecutive sequence of alphabets, in upper and/or lower case. Words with only one letter are also to be considered. Furthermore,
your program must be CaSe InSeNsItIvE. For example, words like "Apple", "apple" or "APPLE" must be considered the same.
Input
The input file is a text with no more than 5000 lines. An input line has at most 200 characters. Input is terminated by EOF.
Output
Your output should give a list of different words that appears in the input text, one in a line. The words should all be in lower case, sorted in alphabetical order. You can be sure that he number of distinct words in the text does not exceed 5000.
Sample Input
Adventures in Disneyland Two blondes were going to Disneyland when they came to a fork in the road. The sign read: "Disneyland Left." So they went home.
Sample Output
a adventures blondes came disneyland fork going home in left read road sign so the they to two went were when
数据有点大注意不要被5000蒙蔽了，自己写了个字符串的qsort。
读入好奇怪用了getchar就对了用scanf读入一个串然后然后取出单词就wrong奇怪啊
#include <stdio.h>
#include <string.h>
#include <ctype.h>
char word[1000010][210];
int ok(char s1[],char s2[])
{if (strcmp(s1,s2)>=0) return 1; else return 0;};
int qsort(long l,long r)
{long i=l,j=r;
char temp[210];
strcpy(temp,word[i]);
if (l>=r) return 0;
while (i<j)
{while (i<j&&ok(word[j],temp)) --j; strcpy(word[i],word[j]);
while (i<j&&ok(temp,word[i])) ++i; strcpy(word[j],word[i]);
}
strcpy(word[i],temp);
qsort(l,i-1);
qsort(i+1,r);
};
void main()
{char x,key[210];
long num=0,i,j,pos=0,f=0;
while((x=getchar()) != EOF)
{
if (!isalpha(x))
{
if (f)
{
key[pos]='\0';
strcpy(word[num],key);
++num;
pos=0;f=0;
}
}
else
{f=1;
if (x<='Z') x=x+32;
key[pos]=x;
++pos;
}
}
qsort(0,num-1);
for (i=0;i<num;i++)
if (strcmp(word[i],word[i+1])!=0) printf("%s\n",word[i]);
}
求·指教啊下面的哪错了，只是把读入改成getchar然后处理出单词就是上面那个就ac了。
#include <stdio.h>
#include <string.h>
#include <ctype.h>
char word[1000010][210];
int ok(char s1[],char s2[])
{if (strcmp(s1,s2)>=0) return 1; else return 0;};
int qsort(long l,long r)
{long i=l,j=r;
char temp[210];
strcpy(temp,word[i]);
if (l>=r) return 0;
while (i<j)
{while (i<j&&ok(word[j],temp)) --j; strcpy(word[i],word[j]);
while (i<j&&ok(temp,word[i])) ++i; strcpy(word[j],word[i]);
}
strcpy(word[i],temp);
qsort(l,i-1);
qsort(i+1,r);
};
void main()
{char x,key[210];
long num=0,i,j,pos=0,f=0;
while((x=getchar()) != EOF)
{
if (!isalpha(x))
{
if (f)
{
key[pos]='\0';
strcpy(word[num],key);
++num;
pos=0;f=0;
}
}
else
{f=1;
if (x<='Z') x=x+32;
key[pos]=x;
++pos;
}
}
qsort(0,num-1);
for (i=0;i<num;i++)
if (strcmp(word[i],word[i+1])!=0) printf("%s\n",word[i]);
}