re: Let's Solve: Code Challenge - Picking Numbers VIEW POST

FULL DISCUSSION
 

The solution and explanation are great.

var n = parseInt(readLine());
    a = readLine().split(' ');

should be using , instead of ;. And make use of a meaning name. I would also look into making use of built-in Map in ES6.

var n = parseInt(readLine()),
    numbers = readLine().split(' ');


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