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Given an array of characters which form a sentence of
words, give an efficient algorithm to reverse the order of
the words (not characters) in it?
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Answer Posted / anubhav meena
#include <stdafx.h>
#include <string.h>
char* ReverseString(char *a){
int length = strlen(a);
printf("length is:%d\n",length);
int i=0;
int j=length-1;
while(i<j){
*(a+i)=*(a+i)^*(a+j);
*(a+j)=*(a+i)^*(a+j);
*(a+i)=*(a+i)^*(a+j);
i++;
j--;
}
return a;
}
int main()
{
char s[] = "katrina kaif is gorgeous gal!";
char *a=s;
char *b=s;
char *e= a+strlen(a);
printf("String is:%s\n",a);
ReverseString(a);
printf("NewString is:%s\n",a);
int i=0;
while(*(a+i)!='\0'){
while(*(a+i)!=' ' && *(a+i)!='\0') i++;
*(a+i)='\0';
ReverseString(a);
if((a+i)!=e){
*(a+i)=' ';
a = a+i+1;
}
else{
break;
}
i=0;
}
printf("FinalString is:%s\n",b);
getchar();
| Is This Answer Correct ? | 3 Yes | 0 No |
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