2623. Memoize

https://leetcode.com/problems/memoize

Javascript

function memoize(fn) {
    const memory = {}
    return function(...args) {
        if (memory.hasOwnProperty(args)) {
            return memory[args]
        }
        memory[args] = fn(...args)
        return memory[args]
    }
}

Typescript

type Fn = (...params: any) => any

function memoize(fn: Fn): Fn {
    const memory = {}
    return function(...args) {
        if (memory.hasOwnProperty(args)) {
            return memory[args]
        }
        memory[args] = fn(...args)
        return memory[args]
    }
}