Question

查看一些旧代码

<!--- RANDOMLY DECIDE IS THIS PERSONS A WINNER 1 IN 8 CHANCE--->
<cfset attributes.random_point = RandRange(1, 8)>

<cfif attributes.random_point eq 5>
  WINNER
<cfelse>
  You got nothing!
</cfif>

如何将此转换为小数赔率？从现在开始，我想使用小数赔率来确定获得x的变化。所以例如我有1.10的几率或1.11的机会获得x。

Answer 1

如果我理解正确，那么我会将获胜的概率定义为小数，然后依赖Rand（），尽管这仍然不太理想

<cfscript>
    numChanceToWin = 0.15;  // <= this == winner == 15% chance to win
    numRandom = Rand(); // decimal from 0 to 1

    if (numRandom <= numChanceToWin ) {
        // Winner
    } else {
        // Loser
    }
<cfscript>

还可以通过设置numChanceToWin = 1/8;甚至if (numRandom/numChanceToWin <= 1) { // Winner

来处理1/8的定义

Answer 2

我只是将attributes.random_point设为randrange（1,100）/ 100

<!--- RANDOMLY DECIDE IS THIS PERSONS A WINNER 1 IN 8 CHANCE--->
<cfset attributes.random_point = RandRange(0, 100)/100>

<cfif attributes.random_point lt 0.11>
  WINNER
<cfelse>
  You got nothing!
</cfif>

计算小数赔率

2 个答案: