CODEWITHSUNDEEP
javascript
Mert
Mert

Reputation: 33

Sum of same elements from different arrays

I have a lot of arrays. I can list them together with for loops, however I need to show each element only one time if there are same elements in these different arrays. For example;

var array01 = [["Jack","92"],["Tom","74"],["Lily","100"],["Jonah","62"],["Lucy","83"]];
var array02 = [["Tom","94"],["Emma","70"],["Jack","100"],["Arnold","91"],["Kate","53"]];
var array03 = [["Jack","72"],["Tom","84"],["Emma","91"],["Jonah","92"],["Lucy","63"]];
var array04 = [["Emma","88"],["Marshall","82"],["Arnold","68"],["Ted","62"],["Lily","73"]];
var array05 = [["Jonah","87"],["Lucy","86"],["Kate","71"],["Jack","66"],["Lily","93"]];

I want to sort the results from the highest value to the lowest one like this:

Jack: 330
Lily: 266
Tom: 252
Emma: 249
Jonah: 241
Lucy: 232
Arnold: 159
Kate: 124
Marshall: 82
Ted: 62

Upvotes: 0

Views: 46

Answers (1)

Rajneesh
Rajneesh

Reputation: 5308

You can make use of reduce to sum the values by merging all of the arrays in to one, then apply sort() for sorting based on score:

var array01 = [["Jack","92"],["Tom","74"],["Lily","100"],["Jonah","62"],["Lucy","83"]];
var array02 = [["Tom","94"],["Emma","70"],["Jack","100"],["Arnold","91"],["Kate","53"]];
var array03 = [["Jack","72"],["Tom","84"],["Emma","91"],["Jonah","92"],["Lucy","63"]];
var array04 = [["Emma","88"],["Marshall","82"],["Arnold","68"],["Ted","62"],["Lily","73"]];
var array05 = [["Jonah","87"],["Lucy","86"],["Kate","71"],["Jack","66"],["Lily","93"]];

var all=[...array01,...array02,...array03,...array04,...array05];

var result = Object.values(all.reduce((acc, [key, val])=>{
    acc[key] = acc[key] || {[key]:0};
    acc[key][key]+=+val;
    return acc;
},{})).sort((a,b)=>Object.values(b)[0]-Object.values(a)[0]);

console.log(result);

Upvotes: 2

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