RosettaCodeData/Task/Van-Eck-sequence/Dyalect/van-eck-sequence.dyalect

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let max = 1000
var a = Array.Empty(max, 0)
for n in 0..(max-2) {
var m = n - 1
while m >= 0 {
if a[m] == a[n] {
a[n+1] = n - m
break
}
m -= 1
}
}
print("The first ten terms of the Van Eck sequence are: \(a[0..10].ToArray())")
print("Terms 991 to 1000 of the sequence are: \(a[991..999].ToArray())")