bad operand types for binary operator “&” java
== has higher precedence than &. You might want to wrap your operations in () to specify how you want your operands to bind to the operators. Similarly for all parts of the if condition.
binary
Binary Search Tree Implementation in C++ STL?
What you need is a way to look up some data given a key. With the key being an unsigned int, this gives you several possibilities. Of course, you could use a std::map: However, there’s other possibilities as well. For example, it’s quite likely that a hash map would be even faster than a binary … Read more
Why prefer two’s complement over sign-and-magnitude for signed numbers?
It’s done so that addition doesn’t need to have any special logic for dealing with negative numbers. Check out the article on Wikipedia. Say you have two numbers, 2 and -1. In your “intuitive” way of representing numbers, they would be 0010 and 1001, respectively (I’m sticking to 4 bits for size). In the two’s … Read more
What is “2’s Complement”?
Two’s complement is a clever way of storing integers so that common math problems are very simple to implement. To understand, you have to think of the numbers in binary. It basically says, for zero, use all 0’s. for positive integers, start counting up, with a maximum of 2(number of bits – 1)-1. for negative … Read more