how to swap two strings without using any third variable ?
Answers were Sorted based on User's Feedback
Answer / chitranshu asthana
char* s1 = "Hello";
char* s2 = "World";
s1 = (char*)((int)s1 + (int)s2);
s2 = (char*)((int)s1 -(int) s2);
s1 = (char*)((int)s1 - (int)s2);
printf("%s:%s", s1, s2);
Is This Answer Correct ? | 91 Yes | 13 No |
Answer / santosh panigrahy
int main()
{
char *a = "hello";
char *b = "world";
a = a + (a-b);
b = a - (a-b)/2;
a = a - (a-b)*2;
printf(" a = %s b = %s ",a,b);
return 0;
}
Is This Answer Correct ? | 26 Yes | 5 No |
Answer / ankit sharma
ANSWER 4 IS BEST AND EASIEST SOLUTION.....THANKS BUDDY
PLEASE DON'T REFER ABOVE THREE SOLUTION BCOZ THEY ARE FOR INTEGER NOT FOR STRING.
I RATED 4TH SOLUTION IS 5/5.
Is This Answer Correct ? | 16 Yes | 4 No |
Answer / ashutosh
say a = 10 and b = 20;
b = a + b;// b= 30
a = b - a;// a= 20
b = b - a;// b= 10
so now a = 20 b= 10
Is This Answer Correct ? | 27 Yes | 16 No |
Answer / ruchi
Hi ashutosh,
This technique is used to swap numeric values without using
3rd vaariable not for strings .
We can do it by using binary shift operators.
Is This Answer Correct ? | 8 Yes | 7 No |
Answer / mathias karlsson
X = X & Y
Y = X.Substring(&H0, X.Length - Y.Length)
X = X.Substring(X.Length - Y.Length, Y.Length)
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / rohit kapade
bool SwapString(char **s1,char **s2)
{
//char *temp = NULL;
//temp = *s1;
//*s1 = *s2;
//*s2 = temp;
*s1 = (char*)((int)*s1 + (int)*s2);
*s2 = (char*)((int)*s1 - (int)*s2);
*s1 = (char*)((int)*s1 - (int)*s2);
return true;
}
Is This Answer Correct ? | 3 Yes | 3 No |
Answer / doesntmatter
" PLEASE DON'T REFER ABOVE THREE SOLUTION BCOZ THEY ARE FOR
INTEGER NOT FOR STRING. "
lol
(c) string -> char * -> pointer -> integer.
Is This Answer Correct ? | 0 Yes | 1 No |
Answer / kollu.praveen
var1="String1"
var2="String2"
var1=var1+var2
var2=mid(var1,1,Len(var1)-Len(var2))
print var2
var1=mid(var1,(Len(var1)-Len(var2)+1),(Len(var2)+1))
print var1
Is This Answer Correct ? | 0 Yes | 2 No |
Answer / rohit kapade
bool SwapString(char **s1,char **s2)
{
char *temp = NULL;
temp = *s1;
*s1 = *s2;
*s2 = temp;
//strcpy(temp,s1);
//strcpy(s1, s2);
//strcpy(s2, temp);
return true;
}
Is This Answer Correct ? | 0 Yes | 6 No |
Write a program to reverse a linked list?
8 Answers Catalytic Software, Satyam,
Is there a c++ certification?
i want the NIC programmer-B model papaer pattren, iwant the all model papers?
Is c++ slower than c?
Can you explain the term "resource acquisition is initialization?"
What's the order in which the objects in an array are destructed?
What is the difference between struct and class?
What is a container class? What are the types of container classes in c++?
What do you mean by public protected and private in c++?
Define precondition and post-condition to a member function?
Ask to write virtual base class code?
Is there a new/delete equivalent of realloc?