It's not a good idea to ask other people to do something trivial, which you can easily do yourself. For example, suppose you are told to compute $1\oplus 1$. You say, "I don't know, I need help with this". The person who gave you this problem asks, "What kind of help? What exactly don't you understand?" You say, "I don't know what $\oplus$ denotes". "Well, to calculate $x\oplus y$ you need to add $x$ and $y$ and then take the remainder when the sum is divided by 2. So the answer is 0 if the sum is even and 1 if the sum is odd. Can you solve the problem now?" "Of course, the answer is 0".
So it is with this problem. If you understood what the Cantor's diagonalization argument is, solving the problem would be trivial. But if you don't understand the argument, you should ask questions about the argument itself, not about how to use it. Otherwise you leave open a possibility that you know and understand the Cantor's argument but cannot be bothered to do a trivial computation. So get a good textbook and tell us what is the first sentence in the description of the Cantor's argument that you don't understand and why.
