for i in 2...5 { print("2..5 \(i)") } for i in 2..<5 { print("2..<5 \(i)") } for c in "abc原文链接:https://www.f2er.com/swift/322860.html
for i in 2...5 { print("2..5 \(i)") } for i in 2..<5 { print("2..<5 \(i)") } for c in "abc原文链接:https://www.f2er.com/swift/322860.html