Apply .gitignore rules

.svn/pristine/ae/ae5555c2f61f8ed3375c6f7cb136bbd05f91a585.svn-base

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+package mathUtil
+
+import (
+	"fmt"
+)
+
+// int类型区间对象，表示连续的int类型区间
+type IntRegion struct {
+	Lower int
+	Upper int
+}
+
+func (this *IntRegion) String() string {
+	return fmt.Sprintf("%d-%d", this.Lower, this.Upper)
+}
+
+// 是否包含指定的值
+func (this *IntRegion) Contains(value int) bool {
+	return this.Lower <= value && value <= this.Upper
+}
+
+// 是否是有序的
+func (this *IntRegion) IsSorted() bool {
+	return this.Lower < this.Upper
+}
+
+// 创建int类型区间对象
+func NewIntRegion(lower, upper int) *IntRegion {
+	return &IntRegion{
+		Lower: lower,
+		Upper: upper,
+	}
+}