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Commonmark migration

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edited Jun 17, 2020 at 9:04

#JavaScript ES5 , 59 bytes

JavaScript ES5 , 59 bytes

F=a=>a.filter((x,i)=>2*x<=a[-~i%(l=a.length)]+a[(i-1+l)%l])

console.log(""+F([5, -8, -9])==""+[-8, -9])
console.log(""+F([8, 8, 8, 8])==""+[8, 8, 8, 8])
console.log(""+F([11, 6, 9, 10])==""+[6, 10])
console.log(""+F([1, 2, 0, 1, 2])==""+[1, 0, 1])
console.log(""+F([6, 9, 4, 10, 16, 18, 13])==""+[6, 4, 10])
console.log(""+F([6, -5, 3, -4, 38, 29, 82, -44, 12])==""+[-5, -4, 29, -44])

#JavaScript ES5 , 59 bytes

F=a=>a.filter((x,i)=>2*x<=a[-~i%(l=a.length)]+a[(i-1+l)%l])

console.log(""+F([5, -8, -9])==""+[-8, -9])
console.log(""+F([8, 8, 8, 8])==""+[8, 8, 8, 8])
console.log(""+F([11, 6, 9, 10])==""+[6, 10])
console.log(""+F([1, 2, 0, 1, 2])==""+[1, 0, 1])
console.log(""+F([6, 9, 4, 10, 16, 18, 13])==""+[6, 4, 10])
console.log(""+F([6, -5, 3, -4, 38, 29, 82, -44, 12])==""+[-5, -4, 29, -44])

JavaScript ES5 , 59 bytes

F=a=>a.filter((x,i)=>2*x<=a[-~i%(l=a.length)]+a[(i-1+l)%l])

console.log(""+F([5, -8, -9])==""+[-8, -9])
console.log(""+F([8, 8, 8, 8])==""+[8, 8, 8, 8])
console.log(""+F([11, 6, 9, 10])==""+[6, 10])
console.log(""+F([1, 2, 0, 1, 2])==""+[1, 0, 1])
console.log(""+F([6, 9, 4, 10, 16, 18, 13])==""+[6, 4, 10])
console.log(""+F([6, -5, 3, -4, 38, 29, 82, -44, 12])==""+[-5, -4, 29, -44])

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answered Oct 3, 2017 at 17:10

DanielIndie

1.2k
6
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#JavaScript ES5 , 59 bytes

F=a=>a.filter((x,i)=>2*x<=a[-~i%(l=a.length)]+a[(i-1+l)%l])

console.log(""+F([5, -8, -9])==""+[-8, -9])
console.log(""+F([8, 8, 8, 8])==""+[8, 8, 8, 8])
console.log(""+F([11, 6, 9, 10])==""+[6, 10])
console.log(""+F([1, 2, 0, 1, 2])==""+[1, 0, 1])
console.log(""+F([6, 9, 4, 10, 16, 18, 13])==""+[6, 4, 10])
console.log(""+F([6, -5, 3, -4, 38, 29, 82, -44, 12])==""+[-5, -4, 29, -44])