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June 22, 2019 02:45
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Save AndrewYatzkan/93da3c1fc86359d49ddf0b5b91de7cbf to your computer and use it in GitHub Desktop.
Find the average rating on a scale of 1-N given an array of numbers.
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| function averageRating(arr) { | |
| return arr.reduce((a,c,i)=>a+c*(i+1))/arr.reduce((a,c)=>a+c); | |
| } | |
| // example: averageRating([12, 234, 456, 767, 566]) => 3.8... |
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