CareerCup

Call Rev for the entire string and then call Rev for each word.

I believe this depends on the implementation of the function. If the function is implemented by reversing the entire sentence (taken as word) and each words thereafter, calling "Rev" for the entire string and thereafter for each word will solve the problem.

To change the word in place, we can change the space (' ') with line ending character (\0). this way we can change each word.

i think sameerud is right

@smareeud how do you pass each word into the function without '/0' in the end and if you concatenate it and pass , you wud have to change it back to space character. Instead we can maintain start and end of each word and jus swap the letters between them after first reversing the entire string.

void reverseWords(char *str)
{int start=0,end=0,length;
char temp;
length=strlen(str);
str=Rev(str);
while(end<length)
{if(str[end]!=' ')
{start=end;
while(end <length && str[end]!=' ')
end++;

end--;
while(end>start)
{temp=str[start];
str[start]=str[end];
str[end]=temp;
start++;end--;
}
}end++;
}
return;
}

okay my bad...i missed the using only Rev() part..
Here goes...

void reverseWords(char *str)
{int start=0,i=0,end=0,length;
char *temp;length=strlen(str);
str=Rev(str);
while(end<length)
{if(str[end]!=' ')
{start=end;
for(i=0;end <length && str[end]!=' ';i++)
{
temp[i++]=str[end++];
}
temp[i]='\0';
temp=Rev(temp);
end--;

for(i=0;start<=end;i++)
{str[start++]=temp[i];
}
}
end++;
}return;
}

void rev(char *str)
{
	int len = strlen(str);
	int cur = 0;
	int start = 0;
	itn end = len-1;
	while(start < end)
	{
		char temp = str[start];
		str[start] = str[end];
		str[end] = temp; 
	}

	start = 0;
	end = 0;
	while(cur < len)
	{
		while(str(cur) != ' ' && cur < len)
		{
			cur++;
			end++;
		}
		end--;
		while(start < end)
		{
			char temp = str[start];
			str[start] = str[end];
			str[end] = temp; 
			end--; start++;
		}
		start = end = ++cur;		
	}

}

void reverse(char *str)
{
	rev(str);
	int start = 0;
	int end = 0;
	int cur = 0;
	int len = strlen(str);
	while(cur < length)
	{
		if(str[cur] != ' ' && cur < length)
		{
			cur++;
		}
		else
		{
			str[cur] = '\0';
			rev(&str[start]);
			str[cur++] = ' ';
			start = cur;
		}
	}
}

void *rev(char *str)
{
	int len = strlen(str);
	int start = 0;
	itn end = len-1;
	while(start < end)
	{
		char temp = str[start];
		str[start] = str[end];
		str[end] = temp; 
	}

}

#include<stdio.h>
#include<string.h>

void reverse(char str[])
{
int end=0,start=0,cur=0,len;
char temp;

while(str[end] != NULL) end++;
end--;

len = end;


while(end>start) {

temp = str[start];
str[start] = str[end];
str[end] = temp;

start++;
end--; 
}
puts(str);


start = 0;
end = 0;
	while(cur < len)
	{
		while(str[cur] != ' ' && cur <= len)
		{
			cur++;
			end++;
		}
		end--;
		while(start < end)
		{
			char temp = str[start];
			str[start] = str[end];
			str[end] = temp; 
			end--; start++;
		}
		start = end = ++cur;		
	}
puts(str);


}


int main()
{
char arr[] = "my name is tom";

puts(arr);
reverse(arr);

return 0;
}

select replace(wm_concat(reverse(substr(' '||reverse('my name is sandeep') ||' ',
level,instr(' '||reverse('my name is sandeep') ||' ',' ',level+1)-
instr(' '||reverse('my name is sandeep') ||' ',' ',level)))),',','')
from dual connect by level<=length(' '||reverse('my name is sandeep') ||' ')

int j=0;
String reversed = " ";
for(int i=0;i<string.length();i++){
if(string.charAt(i)==' '){
reversed =string.substring(j, i)+" "+reversed;
j=i;

}
}