在一场足球比赛中，主教练需要根据场上的情况进行阵型的调整。比赛开始时，主教练排出4-4-2阵型，称为“平衡阵型”；当己方被对手进球后，比分处于落后状态，将阵型换成3-4-3阵型，称为“进攻阵型”；一旦己方进了球，比分领先时，将阵型换成 5-4-1 阵型，称为“防守阵型”。使用状态模式，设计一个程序，模拟阵型的调整过程-In a football game, the coach needs to be adjusted according to the formation of the court case. When the game started, the coach 4-4-2 formation, called "balanced formation"　When the opponents goal one s own being, the score in a backward state, will replace a 3-4-3 formation, called "offensive formation "　Once one s own into the ball, leading the score, it will be replaced with a 5-4-1 formation, known as the" defensive formation. "Use state model to design a program to simulate the formation of the adjustment process