Hour of Code reaches tens of millions of students in 180+ countries. Started as one-hour introductory lesson by Code.org. Now a week-long worldwide initiative during Computer Science Education Week
Bubble Sort continuously swaps adjacent elements until array is in order. Algorithm works by comparing elements and swapping them. First pass processes elements from 0 to n-1. Second pass processes elements from 0 to n-2. Process continues n-1 times until sorted array is found
MIT remains world's best computer science university. Carnegie Mellon and Stanford tied for second place. NUS leads Asia, ranked sixth overall. Oxford ranks fourth in Europe
Array is a collection of elements of same memory size identified by indices. Elements are stored using mathematical formulas to compute their positions. Arrays are among oldest and most important data structures. Modern computers use one-dimensional array of words as memory
Sorting arranges data in a particular order for easier access. Bubble sort repeatedly swaps adjacent elements until sorted. Algorithm works by iterating through array n times
Unicode encodes almost all standard mathematical characters. Mathematical Operators block (U+2200-U+22FF) contains mathematical notation. Supplemental Mathematical Operators block (U+2A00-U+2AFF) includes various mathematical symbols. Mathematical Alphanumeric Symbols block (U+1D400-U+1D7FF) contains Latin and Greek letters