Advent of Code 2020.2 AHK

passwordCount := 1024
passwordMinLength := 8
passwordMaxLength := 20
policyType := "L" ; A=All, N=Numbers, L=Lower, U=Upper

;=========================

totalPassed := 0
policies := genPolicies(policyType)
policiesCount := policies.Count()
passwords := genPasswords(passwordCount, passwordMinLength, passwordMaxLength)

for idx,pwd in passwords
{
    ; Get random policy
    Random, rnd, 1, % policiesCount

    chr := policies[rnd].chr
    min := policies[rnd].min
    max := policies[rnd].max

    cnt := pos := 0
    while (pos := InStr(pwd, chr, true, ++pos))
    {
        cnt++
    }

    res := "FAIL"
    if (cnt >= min && cnt <= max)
    {
        res := "PASS"
        totalPassed++
    }

    ; OutputDebug, % "`n------------------------"
    ;     . "`n" res
    ;     . "`n" "Found: " cnt
    ;     . "`n" "Policy: " min "-" max ": " chr
    ;     . "`n" "Password: " pwd
}
OutputDebug, % "Valid passwords: " totalPassed " (out of " passwordCount ")"

genPasswords(qty := 1024, minLen := 8, maxLen := 20)
{
    passwords := []
    loop, % qty
    {
        pwd := ""
        Random, len, % minLen, % maxLen
        loop, % len
        {
            Random, chr, 33, 126
            pwd .= Chr(chr)
        }
        passwords.Push(pwd)
    }
    return passwords
}

genPolicies(type := "A")
{
    policies := []
    if (type = "A")
    {
        Loop, 94
        {
            Random, min, 1, 3
            Random, max, % min + 1, 9
            policies.Push({"chr" : Chr(32 + A_Index), "min" : min, "max" : max })
        }
    }
    else if (type = "N")
    {
        loop, 10
        {
            Random, min, 1, 3
            Random, max, % min + 1, 9
            policies.Push({"chr" : A_Index-1, "min" : min, "max" : max })
        }
    }
    else if (type = "L")
    {
        loop, 26
        {
            Random, min, 1, 3
            Random, max, % min + 1, 9
            policies.Push({"chr" : Chr(96 + A_Index), "min" : min, "max" : max })
        }
    }
    else if (type = "U")
    {
        loop, 26
        {
            Random, min, 1, 3
            Random, max, % min + 1, 9
            policies.Push({"chr" : Chr(64 + A_Index), "min" : min, "max" : max })
        }
    }
    return policies
}