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ApolloZhu/Draw an hourglass.swift

Last active January 13, 2018 15:58
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Draw an hourglass.swift
let c={String(repeating:$0,count:$1)};func d(_ n:Int,_ i:Int=0)->String{let b=c(" ",i)+c("*",n)+"\n";return n>1 ?b+d(n-2,i+1)+b:b}
print(d(5))
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