**Answer: **For Integers

int i = 10;

int j = 15;

i = i + j;

j = i - j;

i = i - j;

Console.WriteLine("The swapped values are i={0},j={1}", i, j);

In the above code I am adding the two variables. Here i+j = 25 and assigning to i. Now I am subtracting j from i which is 25-15 is equals 10 and assigning to j. In third line I am subtracting j (currently it is 10) from i and assigning to i. So here 25-10=15. At last we will be having the values swapped i=15 and j=10.

For String:

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I used replace function here. If any one has better solution then this please let me know.

string a = "Naga";

string b = "Sundar";

a = a + b;

b = a.Replace(b, "");

a = a.Replace(b, "");

Console.WriteLine("The swapped values are a={0},b={1}", a, b);

I am using the same logic that I used for Integers. I am appending string "a" and "b" and saving it in "a". Now the variable "a" contains text "Nagasundar". From here I am using replace function and eliminates "Sundar". Now string "b" contains "Naga". Once again I am using replace function so that I am removing string "b" (currently "Naga") from "a". So I am getting "Sundar" in variable "a" and "Naga" in variable "b"

**Asked In:** In my last interview |
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