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 / prabhakar
//Simple String Reverse
#include<stdio.h>
#include<string.h>
char str1[50],str2[50];
main()
{
printf("\nEnter The String:");
gets(str1);
rev(str1);
}
rev(char s[20])
{
int i=0,a=0,j=0,k=0;
a=strlen(s);
b:
a--;
while(s[a]!=' '&a>=0)
{
str2[i]=s[a];
a--,i++;
}
str2[i]='\0';
j=strlen(str2)-1;
while(str2[k]!='\0')
{
printf("%c",str2[j]);
j--,k++;
}
printf(" ");
if(a>=0)
{
goto b;
}
printf("\n\n");
}
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