How to Solve Function Composition Problem
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Function Composition
Given an array of functions [f1, f2, f3, ..., fn], return a new function fn that is the function composition of the array of functions. The function composition of [f(x), g(x), h(x)] is fn(x) = f(g(h(...
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Understanding the Function Composition Problem
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Problem Statement
Given an array of functions [f1, f2, f3, ..., fn], return a new function fn that is the function composition of the array of functions. The function composition of [f(x), g(x), h(x)] is fn(x) = f(g(h(x))). The function composition of an empty list of functions is the identity function f(x) = x. You may assume each function in the array accepts one integer as input and returns one integer as output.
Function Composition
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Examples
functions = [x => x + 1, x => x * x, x => 2 * x], x = 465Evaluating from right to left ... Starting with x = 4. 2 * (4) = 8 (8) * (8) = 64 (64) + 1 = 65
functions = [x => 10 * x, x => 10 * x, x => 10 * x], x = 11000Evaluating from right to left ... 10 * (1) = 10 10 * (10) = 100 10 * (100) = 1000
functions = [], x = 4242The composition of zero functions is the identity function
Constraints
1000 <= x <= 10000 <= functions.length <= 1000all functions accept and return a single integerHow Interview Coder Helps with Leetcode Problems
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