試試你的數學有沒有還給老師~ (第5頁)

sjjin26

sjjin26
個人積分：24分
文章編號：22427763

24分

41樓

2010-09-16 19:58

難到一個誇張，這真的是東大生測試過的嗎?

德斯布

德斯布
個人積分：12分
文章編號：22427829

12分

42樓

2010-09-16 20:02

解なし

是無解的意思嗎???

http://www.misakichi.net/mono/shiso.htm
它是這麼說的……

小小工程師的偷閒時間

jhvk

jhvk
個人積分：31分
文章編號：22427849

31分

43樓

2010-09-16 20:03

德斯布 wrote:
解なし是無解的意思嗎...(恕刪)

解なし是無解的意思

力不到，不為財

johnny66182002

johnny66182002
個人積分：13分
文章編號：22427897

13分

44樓

2010-09-16 20:04

■ 神（東大生正答率2%）
4,4,5,9 →

那答對的2%應該是老師改考卷改到神遊時改錯的

烏龜企鵝

烏龜企鵝
個人積分：2分
文章編號：22428283

2分

45樓

2010-09-16 20:23

netzero wrote:
在網路上看到的, 前...(恕刪)

■初級（東大生正答率99%）
1,2,3,4 →1+2+3+4=10
1,3,5,7 →7-3+5+1=10
2,2,2,2 →2X2X2+2=10
2,4,6,8 →8÷4+6+2=10
5,6,7,8 →5+6-(8-7)=10

■中級（東大生正答率85%）
9,9,9,9 →((9X9)+9)÷9=10

■上級（東大生正答率45%）
1,9,1,9 →
3,4,6,6 →((6X4)+6)÷3=10
3,4,6,7 →

■超上級（東大生正答率15%）
1,1,5,8 →

■ 神（東大生正答率2%）
4,4,5,9 →

現在只能解到這程度

若照規矩來

若照規矩來
個人積分：56分
文章編號：22428390

56分

46樓

2010-09-16 20:29

程式碼,是用暴力法沒錯~

var h = 0;
var Sr9 = 0;
var jyu = "123412431324134214231432213421432314234124132431"+
"312431423214324134123421412341324213423143124321";
p = new Array(3);
z = new Array(3);
SrX = new Array();

function addComma(obj){
str = ""+obj.value;
str = str.replace(/[^0-9]/g,"");
obj.value = str;
}

function pushb(){
mag1 = "つ目の";
msg2 = "数値を入力して下さい。";
Sr9 = 0;
p[0] = "+";
p[1] = "-";
p[2] = "*";
p[3] = "/";
SrX = new Array();
z = new Array();

if (document.myForm.txt1.value == "") {
alert("１" + mag1 + msg2);
document.myForm.txt1.focus();
return(false);
}
if (document.myForm.txt2.value == "") {
alert("２" + mag1 + msg2);
document.myForm.txt2.focus();
return(false);
}
if (document.myForm.txt3.value == "") {
alert("３" + mag1 + msg2);
document.myForm.txt3.focus();
return(false);
}
if (document.myForm.txt4.value == "") {
alert("４" + mag1 + msg2);
document.myForm.txt4.focus();
return(false);
}
if (document.myForm.txt5.value == "") {
alert("答えとなる" + msg2);
document.myForm.txt5.focus();
return(false);
}
z[0] = Number(document.myForm.txt1.value);
z[1] = Number(document.myForm.txt2.value);
z[2] = Number(document.myForm.txt3.value);
z[3] = Number(document.myForm.txt4.value);
h = eval(document.myForm.txt5.value);

for (q = 0; q <= 92; q += 4) {
a = z[Number(jyu.charAt(q+0))-1];
b = z[Number(jyu.charAt(q+1))-1];
c = z[Number(jyu.charAt(q+2))-1];
d = z[Number(jyu.charAt(q+3))-1];
for (i = 0; i < 4; i += 1) {
for (j = 0; j < 4; j += 1) {
for (k = 0; k < 4; k += 1) {
Jyu_CK(p[i], p[j], p[k], 1);
Jyu_CK(p[i], p[j], p[k], 2);
Jyu_CK(p[i], p[j], p[k], 3);
Jyu_CK(p[i], p[j], p[k], 4);
Jyu_CK(p[i], p[j], p[k], 5);
}
}
}
}

if (Sr9 != 0) {
kekka = Sr9 + "通り";
} else {
kekka = "解なし";
}
document.myForm.txt6.value = kekka;
document.myForm.txt7.value = SrX.join("\n");
}

function Jyu_CK(Kg1, Kg2, Kg3, Tp){
var Shiki = "";
switch (Tp) {
case 1:
Shiki = a + Kg1 + b;
if (!(Kg1 == "*" || Kg1 == "/" || Kg2 == "+" || Kg2 == "-")) {
Shiki = "(" + Shiki + ")";
}
if (Kg2 == "*" || Kg2 == "/" || Kg3 == "+" || Kg3 == "-") {
Shiki = Shiki + Kg2 + c + Kg3 + d;
} else {
Shiki = "(" + Shiki + Kg2 + c + ")" + Kg3 + d;
}
break;
case 2:
Shiki = b + Kg2 + c;
if (!(Kg2 == "*" || Kg1 == "+")) {
Shiki = "(" + Shiki + ")";
}
if (Kg1 == "*" || Kg1 == "/" || Kg3 == "+" || Kg3 == "-") {
Shiki = a + Kg1 + Shiki + Kg3 + d;
} else {
Shiki = "(" + a + Kg1 + Shiki + ")" + Kg3 + d;
}
break;
case 3:
Shiki = a + Kg1 + b;
if (!(Kg1 == "*" || Kg1 == "/" || Kg2 == "+" || Kg2 == "-")) {
Shiki = "(" + Shiki + ")";
}
if ((Kg2 == "+" && (Kg3 == "+" || Kg3 == "*" || Kg3 == "/")) || ((Kg2 == "-" || Kg2 == "*") && (Kg3 == "*" || Kg3 == "/"))) {
Shiki = Shiki + Kg2 + c + Kg3 + d;
} else {
Shiki = Shiki + Kg2 + "(" + c + Kg3 + d + ")";
}
break;
case 4:
Shiki = b + Kg2 + c;
if (!(Kg2 == "*" || Kg2 == "/" || Kg3 == "+" || Kg3 == "-")) {
Shiki = "(" + Shiki + ")";
}
if ((Kg1 == "+" && (Kg3 == "+" || Kg3 == "*" || Kg3 == "/")) || ((Kg1 == "-" || Kg1 == "*") && (Kg3 == "*" || Kg3 == "/"))) {
Shiki = a + Kg1 + Shiki + Kg3 + d;
} else {
Shiki = a + Kg1 + "(" + Shiki + Kg3 + d + ")";
}
break;
case 5:
Shiki = c + Kg3 + d;
if (!(Kg3 == "*" || Kg2 == "+")) {
Shiki = "(" + Shiki + ")";
}
if ((Kg1 == "+" && (Kg2 == "+" || Kg2 == "*" || Kg2 == "/")) || ((Kg1 == "-" || Kg1 == "*") && (Kg2 == "*" || Kg2 == "/"))) {
Shiki = a + Kg1 + b + Kg2 + Shiki;
} else {
Shiki = a + Kg1 + "(" + b + Kg2 + Shiki + ")";
}
break;
}

if (h == eval(Shiki) && !(Shiki.match(/\/0/i))){
if (Sr9 != 0) {
for (r = 0; r <= Sr9; r += 1) {
if (SrX[r] == Shiki) { return(false); }
}
}
SrX[Sr9] = Shiki;
Sr9 += 1;
}
}