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test.js
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test.js
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function sum(a,b,c,d){
return a+b+c+d
}
function memoize(arbitraryFunction){
const cacheFn = sum;
const inputOutputMap = {};
return function memoizedSum(){
let deeperMap = null
const argumentsLength = arguments.length
let result = null;
arguments.forEach((argument, index)=>{
if(argumentsLength===index){
if(deeperMap) {
if (deeperMap[argument]) {
result = deeperMap[argument]
} else if () {
} else {
if (deeperMap) {
deeperMap[argument] = cacheFn(...arguments)
} else {
inputOutputMap[argument] = cacheFn(...arguments)
}
}
}
} else {
if(deeperMap){
if(deeperMap[argument])
}
}
if(deeperMap[argument]) {
}
}
if(inputOutputMap[argument]){
if(argumentsLength===index){
inputOutputMap[argument] = cacheFn(...arguments)
} else {
if(inputOutputMap[argument]) {
deeperMap = inputOutputMap[argument];
} else {
deeperMap
}
}
}
})
if(inputOutputMap[a]){
if(inputOutputMap[a][b]){
return inputOutputMap[a][b]
} else {
inputOutputMap[a][b] = cacheFn(a,b);
}
} else {
inputOutputMap[a] = {}
inputOutputMap[a][b]= cacheFn(a,b)
}
return inputOutputMap[a][b];
}
}
const memoizedFn = memoize(sum);
memoizedFn(1,2);
memoizedFn(3,5);
//11