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37 lines
1.0 KiB
37 lines
1.0 KiB
package cap3
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import "math"
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type Ex30TriangleType int
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const (
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Ex30TriangleTypeNone Ex30TriangleType = iota // 不是三角形
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Ex30TriangleTypeNormal Ex30TriangleType = iota // 普通三角形
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Ex30TriangleTypeIsosceles Ex30TriangleType = iota // 等腰三角形
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Ex30TriangleTypeEquilateral Ex30TriangleType = iota // 等边三角形
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Ex30TriangleTypeRight Ex30TriangleType = iota // 直角三角形
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)
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func Ex30(nums []float64) Ex30TriangleType {
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a, b, c := nums[0], nums[1], nums[2]
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if a <= 0 || b <= 0 || c <= 0 || a+b <= c || a+c <= b || b+c <= a {
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return Ex30TriangleTypeNone
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}
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if a == b && b == c {
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return Ex30TriangleTypeEquilateral
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}
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if a == b || a == c || b == c {
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return Ex30TriangleTypeIsosceles
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}
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if math.Pow(a, 2)+math.Pow(b, 2) == math.Pow(c, 2) ||
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math.Pow(a, 2)+math.Pow(c, 2) == math.Pow(b, 2) ||
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math.Pow(b, 2)+math.Pow(c, 2) == math.Pow(a, 2) {
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return Ex30TriangleTypeRight
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} else {
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return Ex30TriangleTypeNormal
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}
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}
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