循环赛和淘汰赛的比赛场数如何确定 公式是什么
比如都是有N支队伍参赛 请给我公式
推荐回答（1个）
单循环制 参加比赛的各队之间均相互比赛一次,即为单循环赛。
(1)单循环赛的比赛场数计算公式:场数=队数(队数-1)/2
(2)单循环赛的比数轮数计算方法:参赛队为奇数时,比赛轮数等于队数;参赛队为双数时,比赛轮数等于队数减1。
(3)单循环赛的编排方法:
①一般编排方法。采用“逆时针轮转方法”进行编排,先以阿拉伯数字作为代号,代替队名进行编排。把队数按U型走向分成均等两边,如遇单数队,最后一位数字补为O成为偶数。第一轮只要在U形相对队数之间划横线,即为第一轮比赛秩序。第二轮开始固定左上角1数字,其余数字均按逆时针方向移动一个位置,即为第二轮比赛秩序,以后各轮比赛秩序以此类推。遇O队数即轮空队。
例如,有7个队参加比赛,比赛秩序编排如下所示:
第一轮 第二轮 第三轮 第四轮 第五轮 第六轮 第七轮
1—0 1—7 1—6 1—5 1—4 1—3 1—2
2—7 0—6 7—5 6—4 5—3 4—2 3—0
3—6 2—5 0—4 7—3 6—2 5—0 4—7
4—5 3—4 2—3 0—2 7—0 6—7 5—6
采用逆时针轮转法编排的优点,是参赛各队比赛进度一致,编排方法简单,易操作、检查。但当单数队在5个队以上时,抽签为倒数的第二数字队则在第四轮开始每轮均同上轮轮空队进行比赛,如上述的数字6代表的队。由此产生了球类比赛中的不公平竞争现象。为了解决这一问题,目前的比赛大多采用“贝格尔编排方法”。
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