假设有100000个人参与游戏，每次按级别匹配，输赢随机，大概400局出至尊星耀I

//author:zbg
//2018-12-12 10:58print = console.log;function Player()
{this.grade = 1; //段位this.level = 0; //星星this.score = 0; //勇者积分。简化起见，每参赛一次1次加1分，20分可换星，10分可保护段位不掉。if (typeof Player._initialized == "undefined"){Player.grade_max_level = {1: {grade: "倔强青铜III", max_level: 3},2: {grade: "倔强青铜II",  max_level: 3},3: {grade: "倔强青铜I",   max_level: 3},4: {grade: "秩序白银III", max_level: 3},5: {grade: "秩序白银II",  max_level: 3},6: {grade: "秩序白银I",   max_level: 3},7: {grade: "荣耀黄金III", max_level: 4},8: {grade: "荣耀黄金II",  max_level: 4},9: {grade: "荣耀黄金I",   max_level: 4},10: {grade: "尊贵铂金III", max_level: 4},11: {grade: "尊贵铂金II",  max_level: 4},12: {grade: "尊贵铂金I",   max_level: 4},13: {grade: "永恒钻石V",   max_level: 5},14: {grade: "永恒钻石IV",  max_level: 5},15: {grade: "永恒钻石III", max_level: 5},16: {grade: "永恒钻石II",  max_level: 5},17: {grade: "永恒钻石I",   max_level: 5},18: {grade: "至尊星耀V",   max_level: 5},19: {grade: "至尊星耀IV",  max_level: 5},20: {grade: "至尊星耀III", max_level: 5},21: {grade: "至尊星耀II",  max_level: 5},22: {grade: "至尊星耀I",   max_level: 5}};Player.cmp = function(p1, p2){if(p1.grade > p2.grade)return 1;else if(p1.grade < p2.grade)return -1;if(p1.level > p2.level)return 1;else if(p1.level < p2.level)return -1;return 0;};Player.prototype.level_up = function(){this.level++;if(this.level > Player.grade_max_level[this.grade].max_level){this.grade++;this.level = 0;if(this.grade > 22){this.grade = 22;this.level = 5;}}}Player.prototype.level_down = function(){this.level--;if(this.level < 0){this.grade--;if(this.grade < 1 ){this.grade = 1;this.level = 0;}else{this.level = Player.grade_max_level[this.grade].max_level;}}}Player.prototype.win = function(){this.level_up();this.score++;if(this.score > 20)//勇者积分加星{this.score = 0;this.level_up();}}Player.prototype.lose = function(){this.score++;if(this.level == 0 && this.score >= 10)//段位保护this.score -= 10;elsethis.level_down();}}Player._initialized = true;
}players = new Array(100000);
for(var i = 0; i < 100000; i++)
{players[i] = new Player();
}
print("ok");function print_state()
{d = {};for(var i = 1; i <= 22; i++){d[i] = {};for(var j = 0; j <= Player.grade_max_level[i].max_level; j++){d[i][j] = 0;}}for(var i = 0; i < 100000; i++){d[players[i].grade][players[i].level]++;}for(var i = 1; i <= 22; i++){s = Player.grade_max_level[i].grade;ss = 0;sss = "";for(var j = 0; j <= Player.grade_max_level[i].max_level; j++){sss +=j + ": " + d[i][j] + ", ";ss += d[i][j];}print(s + ": " + ss + ": " + sss);}
}function battle(n)
{for(var i = 0; i < n; i++){players.sort(Player.cmp);//按级别排序后，相邻匹配for(var j = 0; j < 100000; j += 2){if(Math.random() > .5){players[j].win();players[j + 1].lose();}else{players[j + 1].win();players[j].lose();}}}
}battle(400);
print_state();

输出:

ok
倔强青铜III: 942: 0: 239, 1: 233, 2: 232, 3: 238, 
倔强青铜II: 1615: 0: 412, 1: 417, 2: 397, 3: 389, 
倔强青铜I: 2559: 0: 678, 1: 659, 2: 612, 3: 610, 
秩序白银III: 3630: 0: 995, 1: 953, 2: 882, 3: 800, 
秩序白银II: 5017: 0: 1421, 1: 1304, 2: 1191, 3: 1101, 
秩序白银I: 6407: 0: 1824, 1: 1672, 2: 1512, 3: 1399, 
荣耀黄金III: 9934: 0: 2349, 1: 2165, 2: 1976, 3: 1803, 4: 1641, 
荣耀黄金II: 11189: 0: 2721, 1: 2462, 2: 2237, 3: 2004, 4: 1765, 
荣耀黄金I: 11632: 0: 2934, 1: 2576, 2: 2297, 3: 2066, 4: 1759, 
尊贵铂金III: 11175: 0: 2871, 1: 2488, 2: 2254, 3: 1908, 4: 1654, 
尊贵铂金II: 9922: 0: 2586, 1: 2267, 2: 1932, 3: 1710, 4: 1427, 
尊贵铂金I: 8225: 0: 2210, 1: 1871, 2: 1623, 3: 1408, 4: 1113, 
永恒钻石V: 7466: 0: 1802, 1: 1466, 2: 1340, 3: 1105, 4: 975, 5: 778, 
永恒钻石IV: 4823: 0: 1183, 1: 993, 2: 829, 3: 734, 4: 593, 5: 491, 
永恒钻石III: 2804: 0: 704, 1: 589, 2: 496, 3: 400, 4: 356, 5: 259, 
永恒钻石II: 1472: 0: 379, 1: 321, 2: 248, 3: 221, 4: 171, 5: 132, 
永恒钻石I: 706: 0: 191, 1: 151, 2: 122, 3: 98, 4: 84, 5: 60, 
至尊星耀V: 303: 0: 86, 1: 62, 2: 57, 3: 39, 4: 32, 5: 27, 
至尊星耀IV: 120: 0: 33, 1: 22, 2: 26, 3: 15, 4: 13, 5: 11, 
至尊星耀III: 41: 0: 10, 1: 10, 2: 7, 3: 6, 4: 6, 5: 2, 
至尊星耀II: 12: 0: 4, 1: 4, 2: 0, 3: 2, 4: 2, 5: 0, 
至尊星耀I: 6: 0: 2, 1: 2, 2: 0, 3: 1, 4: 0, 5: 1,