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baseball.js
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baseball.js
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var CONFIG_POOL = new Set([1,2,3,4,5,6,7,8,9]);
var CONFIG_NUM_DIGIT = 3;
function is_allowed_number(number)
{
var numbers = new Array();
var tmp_number = String(number);
var tmp;
for (var i = 0; i < CONFIG_NUM_DIGIT; i++)
{
tmp = tmp_number.substr(i, 1);
if (tmp == '')
{
return false;
}
else if (CONFIG_POOL.has(Number(tmp)) == false)
{
return false;
}
numbers[numbers.length] = tmp;
}
var tmp_set = new Set(numbers);
if (tmp_set.size != tmp_number.length || tmp_set.size != CONFIG_NUM_DIGIT)
{
return false;
}
return true;
}
function get_pool()
{
var pool = new Array();
for (var number = Math.pow(10, CONFIG_NUM_DIGIT - 1); number < Math.pow(10, CONFIG_NUM_DIGIT); number++)
{
if (is_allowed_number(number) == true)
{
pool[pool.length] = String(number);
}
}
return pool;
}
var game_pool = new Array();
var game_all_pool = get_pool();
var game_history = new Array();
var game_used = new Set();
var potential = new Array();
for (var i = 0; i <= CONFIG_NUM_DIGIT; i++)
{
for (var j = 0; j <= CONFIG_NUM_DIGIT; j++)
{
if(i + j <= 3)
{
potential[potential.length] = [i, j];
}
}
}
window.onload = function()
{
init();
}
function calc_s_and_b(number1, number2)
{
var q = new Array();
var a = new Array();
var s = 0;
var b = 0;
for (var i = 0; i < CONFIG_NUM_DIGIT; i++)
{
q[q.length] = number1.substr(i, 1);
a[a.length] = number2.substr(i, 1);
}
for (var i = 0; i < CONFIG_NUM_DIGIT; i++)
{
if (q[i] == a[i])
{
s++;
}
else if (a.indexOf(q[i]) != -1)
{
b++;
}
}
return [s, b];
}
function result_formatter(s, b)
{
if (s == 0 && b == 0)
{
return "X";
}
else if (b == 0)
{
return s + "S";
}
else if (s == 0)
{
return b + "B";
}
else
{
return s + "S" + b + "B";
}
}
function calc_pool(q, s, b)
{
var count = 0;
for (var i = 0; i < game_pool.length; i++)
{
var result = calc_s_and_b(q, game_pool[i]);
var _s = result[0];
var _b = result[1];
if (_s == s && _b == b)
{
count++;
}
}
return count;
}
function calc_best_question()
{
var q_pool = [];
var q_dups = new Set();
for (var i = 0; i < game_all_pool.length; i++)
{
q_str = game_all_pool[i];
iter = CONFIG_POOL.values();
element = iter.next();
while(element['done'] == false)
{
if (game_used.has(element['value']) == false)
{
q_str = q_str.replace(String(element['value']), "X");
}
element = iter.next();
}
if (q_dups.has(q_str) == true)
{
continue;
}
q_dups.add(q_str);
q_pool[q_pool.length] = game_all_pool[i];
}
var before_count = game_pool.length;
var best = -1.0;
var best_q = 0;
var best_total = 0;
var best_info = {};
for (var i = 0; i < q_pool.length; i++)
{
var score = 0.0;
var total_count = 0.0;
var sb_info = {};
for (var j = 0; j < potential.length; j++)
{
var s = potential[j][0];
var b = potential[j][1];
var remain_count = calc_pool(q_pool[i], s, b);
if (remain_count == 0)
{
continue;
}
total_count += remain_count;
sb_info[String(s)+String(b)] = remain_count;
}
for (var j in sb_info)
{
var probability = sb_info[j] / before_count;
if (Number(j.substr(0, 1)) == CONFIG_NUM_DIGIT)
{
score += probability * (before_count - sb_info[j] + 1) / before_count
}
else
{
score += probability * (before_count - sb_info[j]) / before_count
}
}
if (score > best)
{
best = score;
best_total = total_count;
best_q = q_pool[i];
best_info = sb_info;
}
}
result_str = "Recommend Answer: " + best_q + ", Score: " + best.toFixed(2);
var count = 0;
for (var i = 0; i < potential.length; i++)
{
var s = potential[i][0];
var b = potential[i][1];
var key = String(s) + String(b);
if (best_info[key] != undefined)
{
count++;
var probability = best_info[key] / best_total * 100;
var s = key.substr(0, 1);
var b = key.substr(1, 1);
result_str += "\n" + result_formatter(s, b) + ": Count: " + best_info[key] + ", Probability: " + probability.toFixed(2);
}
}
if (count <= 1)
{
mainForm.txt_answer.value = "Game Finished! Answer: " + best_q + "\nPress Reset to New Game!";
mainForm.input_S.value = "3";
}
else
{
mainForm.txt_answer.value = result_str;
}
mainForm.input_Q.value = best_q;
}
function execute()
{
try
{
var q_input = mainForm.input_Q.value;
var s_input = Number(mainForm.input_S.value);
var b_input = Number(mainForm.input_B.value);
if (is_allowed_number(q_input) == false)
{
alert("Not allowed number input.");
return;
}
var backups = [];
for (var i = 0; i < game_pool.length; i++)
{
var result = calc_s_and_b(q_input, game_pool[i]);
var s = result[0];
var b = result[1];
if (s_input != s || b_input != b)
{
backups[backups.length] = game_pool.splice(i, 1)[0];
i--;
}
}
if( game_pool.length == 0)
{
game_pool = backups;
mainForm.input_S.value = "";
mainForm.input_B.value = "";
alert("Not allowed number input.");
return;
}
mainForm.input_Q.value = "";
mainForm.input_S.value = "";
mainForm.input_B.value = "";
var result = result_formatter(s_input, b_input);
var history = new Option();
history.text = q_input + " - " + result;
mainForm.history.options.add(history);
q_input = Number(q_input);
for (var i = 0; i < CONFIG_NUM_DIGIT; i++)
{
game_used.add(parseInt(q_input % 10));
q_input /= 10;
}
calc_best_question()
}
catch(e)
{
alert(e);
}
}
function init()
{
reset_game();
}
function reset_game()
{
mainForm.input_Q.value = "";
mainForm.input_S.value = "";
mainForm.input_B.value = "";
mainForm.history.options.length = 0;
mainForm.txt_answer.value = "";
game_pool = get_pool();
game_used = new Set();
calc_best_question();
}
// EOF