回答編集履歴

2

bichousei

2019/06/20 03:22

投稿

yambejp
yambejp

スコア116828

test CHANGED
@@ -22,7 +22,7 @@
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  ```javascript
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- const ranking=(arr,num)=>[1,2].indexOf(num)<0?null:arr.map((x,y,z)=>z.filter(w=>(num==2)?w<x:w>x).length+1).map((x,y,z)=>{const l=z.filter(w=>w==x).length;return l==1?x:((l)*(x*2+l-1)/2/l)});
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+ const ranking=(arr,num)=>[1,2].indexOf(num)<0?null:arr.map((x,y,z)=>z.filter(w=>(num==2)?w<x:w>x).length+1).map((x,y,z)=>{const l=z.filter(w=>w==x).length;return l==1?x:(x*2+l-1)/2}); // 微調整
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  let a = [56,66,68,77,77,83,56];
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1

平均

2019/06/20 03:22

投稿

yambejp
yambejp

スコア116828

test CHANGED
@@ -15,3 +15,19 @@
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  console.log(ranking(a,3)); //null
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  ```
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+ # 平均
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+ ```javascript
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+ const ranking=(arr,num)=>[1,2].indexOf(num)<0?null:arr.map((x,y,z)=>z.filter(w=>(num==2)?w<x:w>x).length+1).map((x,y,z)=>{const l=z.filter(w=>w==x).length;return l==1?x:((l)*(x*2+l-1)/2/l)});
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+ let a = [56,66,68,77,77,83,56];
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+ console.log(ranking(a,1));
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+ console.log(ranking(a,2));
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+ ```