山羊与汽车游戏的实验算法

实验1：

function shuffle(target) {var j, x, i = target.length;for (; i > 0; j = parseInt(Math.random() * i), x = target[--i], target[i] = target[j], target[j] = x) {}return target
}function removeAt(target, index) {return !!target.splice(index, 1).length
}var bingo1 = 0
var bingo2 = 0for (var i = 0; i < 10000; i++) {var arr = shuffle([0, 0, 1]);var index = parseInt(Math.random() * 3);if (arr[index]) bingo1++
}for (var i = 0; i < 10000; i++) {var arr = shuffle([0, 0, 1]);var index = parseInt(Math.random() * 3);var errIndex = 0// 主持人删掉一个错误答案for (var j = 0; j < arr.length; j++) {if (arr[j] == 0 && j != index) {errIndex = jarr[j] = 'x'break;}}
　　 // 遍历所有答案，如果用户选择的是错的，那根据强制交换的约定，就是一定是对的。for (var k = 0; k < arr.length; k++) {if (arr[k] == 0 && k == index) {bingo2++}}
}console.log(bingo1, bingo2);

 

更简单的实验：

function shuffle(target) {var j, x, i = target.length;for (; i > 0; j = parseInt(Math.random() * i), x = target[--i], target[i] = target[j], target[j] = x) {}return target
}function removeAt(target, index) {return !!target.splice(index, 1).length
}var bingo1 = 0
var bingo2 = 0for (var i = 0; i < 10000; i++) {var arr = shuffle([0, 0, 1]);var index = parseInt(Math.random() * 3);if (arr[index]) bingo1++if (!arr[index]) bingo2++
}console.log(bingo1, bingo2);