计算水平线与垂直线交点个数问题。扫描方法计算。-Calculation of horizontal and vertical line of intersection the number of questions. Scanning method.

Line intersection Java

给定两直线，判断直线的状态，是否有交点，无需调试，简单易懂。(Given two straight lines to determine the state of the line, whether there is intersection, without debugging, easy to understand.The stable marriage problem based on matching algorithm, without debugging.)