我想用java做一个红绿灯算法。首先问人要不要过马路Y／N,Y的话就变为绿灯,然后再变为红灯,要有斑马线。我想了很久都没头绪，谁能帮我解决这个烦恼么？

我觉得不因该是问人要过马路，而是设置一个定时器，设定一定的时间，自动切换红绿灯

private void timer1_Tick(object sender, EventArgs e)
        {
            // 如果绿灯亮了10秒，让黄灯亮
            if (lblGreen.Visible == true && second == 10)
            {
                second = 0;
                lblGreen.Visible = false;               
                lblYellow.Visible = true;               
            }
            // 如果黄灯亮了2秒，让红灯亮
            else if (lblYellow.Visible == true && second == 2)
            {
                lblYellow.Visible = false;
                lblRed.Visible = true;
                second = 0;
            }
            // 如果红灯亮了10秒，让绿灯亮
            else if (lblRed.Visible == true && second == 10)
            {
                lblRed.Visible = false;
                lblGreen.Visible = true;
                second = 0;
            }
            // 否则增加灯亮的时间
            else
            {
                second++;               
            }

            lblYellow.Text = Convert.ToString(2 - second);//背景上的字
            lblRed.Text = Convert.ToString(10 - second);
            lblGreen.Text = Convert.ToString(10 - second);
        }

C#编写

希望能帮到你，别忘了采纳我的答案哦，祝你生活愉快！