F

faces of a cube, 176

factorial, recursive implementation of, 89–91

factorial operator (n!), 89

factors, using to solve Count Open Lockers, 163–164

filmstrip, visualizing time as, 178

finalizer method, 125

Find the First Nonrepeated Character problem, 73–76

first element case, writing for remove, 36

fit, as a key theme of nontechnical questions, 194

flattened list, creating, 48

floor operation of rounding, 164

food chain. See programmer food chain

foreign keys, 132, 133

formatting resumes, 208

4D (four-dimensional) hypercubes, 178

The Fox and the Duck problem, 179–180, 181

fractional weighing, counting as full weighing, 172

friend classes, in C++, 187

Friend Classes problem, 187

function

checking data coming into, 40

checking each line of, 40–41

returning the maximum value stored in an array, 20–21

returning values properly, 40, 41

fuses, lighting both ends of, 182