Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Create a function that takes a list of functions and sorts them in ascending order based on
how many calls are needed for them to return a non-function.
Examples
f1 = => "hello"
// f1() → "hello"
f2 = => => "edabit"
// f2() () → "edabit"
f3 = _ => => => "user"
// f3() () () → "user"
funcSort([f2, f3, f1]) → [f1, f2, f3]
// [f2, f3, f1] [2, 3, 1] → [1, 2, 3] → [f1, f2, f3]
-
funcSort([f1, f2, f3])
// [f1, f2, f3]
-
[f1, f2, f3]
[1, 2, 3] - [1, 2, 3] → [f1, f2, f3]
funcSort ([f2, "func"])
// [f2, "func"] -
-
["func", f2]
[2, 0] 1 [0, 2] ["func", f2]
Transcribed Image Text:Create a function that takes a list of functions and sorts them in ascending order based on how many calls are needed for them to return a non-function. Examples f1 = => "hello" // f1() → "hello" f2 = => => "edabit" // f2() () → "edabit" f3 = _ => => => "user" // f3() () () → "user" funcSort([f2, f3, f1]) → [f1, f2, f3] // [f2, f3, f1] [2, 3, 1] → [1, 2, 3] → [f1, f2, f3] - funcSort([f1, f2, f3]) // [f1, f2, f3] - [f1, f2, f3] [1, 2, 3] - [1, 2, 3] → [f1, f2, f3] funcSort ([f2, "func"]) // [f2, "func"] - - ["func", f2] [2, 0] 1 [0, 2] ["func", f2]
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