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http://www.freecodecamp.com/fcc0208647c 's solution for Bonfire: Diff Two Arrays
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// Bonfire: Diff Two Arrays | |
// Author: @fcc0208647c | |
// Challenge: http://www.freecodecamp.com/challenges/bonfire-diff-two-arrays | |
// Learn to Code at Free Code Camp (www.freecodecamp.com) | |
function diff(arr1, arr2) { | |
arr3 = arr1.concat(arr2); | |
final = arr3.filter(function(val, index, arr){ | |
console.log(arr3.indexOf(val),arr3.lastIndexOf(val),val); | |
return arr3.indexOf(val) === arr3.lastIndexOf(val); | |
}); | |
return final; | |
} | |
diff([1, 2, 3, 5], [1, 2, 3, 4, 5]); |
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