kiinlam
3/25/2016 - 4:19 AM
双色球中奖注数计算
双色球中奖注数计算
<!DOCTYPE html>
<html>
<head>
</head>
<body>
<fieldset>
<legend>普通</legend>
<p>红<input id="red" type="text" /></p>
<p>蓝<input id="blue" type="text" /></p>
<p>红命中<input id="mred" type="text" /></p>
<p>蓝命中<input id="mblue" type="text" /></p>
<button onclick="calculate()">计算</button>
</fieldset>
<fieldset>
<legend>胆拖</legend>
<p>胆红<input id="dred" type="text" /></p>
<p>拖红<input id="tred" type="text" /></p>
<p>蓝<input id="blues" type="text" /></p>
<p>胆红命中<input id="mdred" type="text" /></p>
<p>拖红命中<input id="mtred" type="text" /></p>
<p>蓝命中<input id="mblues" type="text" /></p>
<button onclick="dtcalculate()">计算</button>
</fieldset>
<div>结果在控制台查看</div>
<script>
var qs = function () {
return document.querySelector.apply(document, arguments);
};
var calculate = function() {
var red = qs("#red").value * 1
, blue = qs("#blue").value * 1
, mred = qs("#mred").value * 1
, mblue = qs("#mblue").value * 1
, awards = [0, 0, 0, 0, 0, 0];
switch (mred) {
case 0:
case 1:
case 2:
mblue > 0 && (awards[5] += combination(red, 6));
break;
case 3:
if (mblue > 0) {
awards[5] += combination(red - mred, 4) * combination(mred, 2);
awards[5] += combination(red - mred, 5) * combination(mred, 1);
awards[5] += combination(red - mred, 6);
awards[4] += combination(red - mred, 3);
}
break;
case 4:
if (mblue > 0) {
awards[5] += combination(red - mred, 6);
awards[5] += combination(red - mred, 5) * combination(mred, 1);
awards[5] += combination(red - mred, 4) * combination(mred, 2);
awards[4] += combination(red - mred, 3) * combination(mred, 3);
awards[4] += combination(red - mred, 2) * combination(mred, 4) * (blue - 1);
awards[3] += combination(red - mred, 2);
} else {
awards[4] += combination(red - mred, 2) * blue;
}
break;
case 5:
if (mblue > 0) {
awards[5] += combination(red - mred, 6);
awards[5] += combination(red - mred, 5) * combination(mred, 1);
awards[5] += combination(red - mred, 4) * combination(mred, 2);
awards[4] += combination(red - mred, 3) * combination(mred, 3);
awards[4] += combination(red - mred, 2) * combination(mred, 4) * (blue - 1);
awards[3] += combination(red - mred, 2) * combination(mred, 4);
awards[3] += combination(red - mred, 1) * combination(mred, 5) * (blue - 1);
awards[2] += combination(red - mred, 1);
} else {
awards[4] += combination(red - mred, 2) * combination(mred, 4) * blue;
awards[3] += combination(red - mred, 1) * combination(mred, 5) * blue;
}
break;
case 6:
if (mblue > 0) {
awards[5] += combination(red - mred, 6);
awards[5] += combination(red - mred, 5) * combination(mred, 1);
awards[5] += combination(red - mred, 4) * combination(mred, 2);
awards[4] += combination(red - mred, 3) * combination(mred, 3);
awards[4] += combination(red - mred, 2) * combination(mred, 4) * (blue - 1);
awards[3] += combination(red - mred, 2) * combination(mred, 4);
awards[3] += combination(red - mred, 1) * combination(mred, 5) * (blue - 1);
awards[2] += combination(red - mred, 1) * combination(mred, 5);
awards[1] += blue - 1;
awards[0]++;
} else {
awards[4] += combination(red - mred, 2) * combination(mred, 4) * blue;
awards[3] += combination(red - mred, 1) * combination(mred, 5) * blue;
awards[1] += blue;
}
break;
}
show(awards);
};
var dtcalculate = function() {
var dred = qs("#dred").value * 1
, tred = qs("#tred").value * 1
, blues = qs("#blues").value * 1
, mdred = qs("#mdred").value * 1
, mtred = qs("#mtred").value * 1
, mblues = qs("#mblues").value * 1;
if (dred + tred < 6) {
return;
}
var awards = [0, 0, 0, 0, 0, 0];
awards = dtcombination(dred, tred, blues, mdred, mtred, mblues);
show(awards);
};
var combination = function(a, b) {
var n, r;
a / 2 < b && (b = a - b);
if (a < b || b < 0) {
return 0;
}
if (a >= 0 && b === 0) {
return 1;
}
n = 1;
r = a;
for (var i = 1; i <= b; i++) {
n *= i;
i < b && (r *= a - i);
}
return r / n;
};
var dtcombination = function(a, b, c, x, y, z) {
var y2 = y <= 6 - a ? y : 6 - a
, mz = [];
for (var i = 0; i <= y2; i++) {
mz[i] = x + i;
}
var result = [0, 0, 0, 0, 0, 0]
, m = 0;
if (z == 1) {
for (var i = 0; i <= y2; i++) {
m = rank(mz[i], 0);
m != -1 && (result[m] += C(b - y, 6 - a - i) * (c - 1) * C(y, i));
m = rank(mz[i], 1);
result[m] += C(b - y, 6 - a - i) * C(y, i);
}
}
if (z == 0){
for (var i = 0; i <= y2; i++) {
m = rank(mz[i], 0);
m != -1 && (result[m] += C(b - y, 6 - a - i) * c * C(y, i));
}
}
return result;
};
var rank = function(e, t) {
var n = e * 1 + t * 1;
switch (n) {
case 7:
return 0;
case 6:
return t == 1 ? 2 : 1;
case 5:
return 3;
case 4:
return 4;
default:
return t == 1 ? 5 : -1
}
};
var C = function(e, n) {
if (n <= e) {
var r = F(e - n) * F(n);
r = F(e) / r;
return r;
}
return 0;
};
var F = function(e) {
return e == 0 ? 1 : F(e - 1) * e;
};
var show = function(arr) {
console.log('中奖注数：');
console.log(arr);
};
</script>
</body>
</html>