You have a bunch of files (N files in particular)
Each file has a bunch of numbers in it
You have a bunch of machines(as many as you want)
Goal: Find the sum of all the numbers in all the files (n1 + n2 + n3) + (n4+n5+n6) ..... = TotalSumAnswer
total(fileId: number, machineId: number): sums up all the numbers in the file corresponding to fieldId,
by spawning a job to run to do that work on the machine identified by machineId. when the job finishes it returns that sum.
Write a program that utilizes total() in order to find the main sum of all the files.
My Solution:
let filesMap = {};
let machinesMap = {};
//For generating files & numbers:
function generateFiles(N) {
return new Promise((resolve, reject) => {
if(N>0) {
for(let i = 1; i <= N; i++) {
filesMap['f'+[i]] = [i, i+1, i+2]
}
resolve(filesMap);
} else {
reject("File length should be greater than 0")
}
})
}
//generating two files
generateFiles(2).then((res) => {
let j = 1;
for(let i in res) {
total(i, 'm'+ j);
j++;
}
});
//adding files based on fieldId, and mapping to machine id
function total(fileid, machineid) {
machineWork(filesMap[fileid], machineid);
}
function machineWork(numsArr, machineId) {
let sum = 0;
numsArr.forEach((val, i) => {
sum += val;
})
machinesMap[machineId] = sum;
sumAllFiles(machinesMap)
}
//total sum of file numbers
function sumAllFiles(machinesMap) {
let sum = 0;
for(let i in machinesMap) {
sum += machinesMap[i];
}
console.log(sum);
}Comments (5)