4个数字的混合运算得固定结果的可能性
作者 佚名技术
来源 服务器技术
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发布时间 2012-07-11
点击浏览该文件 大家给帮忙测试下 : ) //主要的运算代码如下:(这种东西做起来太麻烦了..) //复制到第一桢,也能通过输出窗口进行测试 function all_r(num1, num2, num3, num4) { s = ["+", "-", "*", "/"]; n = []; for (i=0; i<4; i++) { temp1 = num1+s[i]+num2; for (j=0; j<4; j++) { temp2 = temp1+s[j]+num3; for (k=0; k<4; k++) { temp3 = temp2+s[k]+num4; n.push(temp3); } } } } function Result(num1, num2, num3, num4, r) { kong = false; all_r(num1, num2, num3, num4); var result_arr = []; var result; var num = 0; for (z=0; z num2_len = new String(num2).length; num3_len = new String(num3).length; m1 = n[z].substr(num1_len, 1); m2 = n[z].substr(num1_len+num2_len+1, 1); m3 = n[z].substr(num1_len+num2_len+num3_len+2, 1); if (m1 == "+" and m2 == "+" and m3 == "+") { result = Number(num1)+Number(num2)+Number(num3)+Number(num4); } if (m1 == "+" and m2 == "+" and m3 == "-") { result = Number(num1)+Number(num2)+Number(num3)-num4; } if (m1 == "+" and m2 == "+" and m3 == "*") { result = Number(num1)+Number(num2)+num3*num4; } if (m1 == "+" and m2 == "+" and m3 == "/") { result = Number(num1)+Number(num2)+num3/num4; } //------------------------------ if (m1 == "+" and m2 == "-" and m3 == "+") { result = Number(num1)+Number(num2)-num3+Number(num4); } if (m1 == "+" and m2 == "-" and m3 == "-") { result = Number(num1)+Number(num2)-num3-num4; } if (m1 == "+" and m2 == "-" and m3 == "*") { result = Number(num1)+Number(num2)-num3*num4; } if (m1 == "+" and m2 == "-" and m3 == "/") { result = Number(num1)+Number(num2)-num3/num4; } //----------------------------- if (m1 == "+" and m2 == "*" and m3 == "+") { result = Number(num1)+num2*num3+Number(num4); } if (m1 == "+" and m2 == "*" and m3 == "-") { result = Number(num1)+num2*num3-num4; } if (m1 == "+" and m2 == "*" and m3 == "*") { result = Number(num1)+num2*num3*num4; } if (m1 == "+" and m2 == "*" and m3 == "/") { result = Number(num1)+num2*num3/num4; } //------------------------ if (m1 == "+" and m2 == "/" and m3 == "+") { result = Number(num1)+num2/num3+Number(num4); } if (m1 == "+" and m2 == "/" and m3 == "-") { result = Number(num1)+num2/num3-num4; } if (m1 == "+" and m2 == "/" and m3 == "*") { result = Number(num1)+num2/num3*num4; } if (m1 == "+" and m2 == "/" and m3 == "/") { result = Number(num1)+num2/num3/num4; } //------------------------ if (m1 == "-" and m2 == "+" and m3 == "+") { result = num1-num2+Number(num3)+Number(num4); } if (m1 == "-" and m2 == "+" and m3 == "-") { result = num1-num2+Number(num3)-num4; } if (m1 == "-" and m2 == "+" and m3 == "*") { result = num1-num2+num3*num4; } if (m1 == "-" and m2 == "+" and m3 == "/") { result = num1-num2+num3/num4; } //---------------------------------- if (m1 == "-" and m2 == "-" and m3 == "+") { result = num1-num2-num3+Number(num4); } if (m1 == "-" and m2 == "-" and m3 == "-") { result = num1-num2-num3-num4; } if (m1 == "-" and m2 == "-" and m3 == "*") { result = num1-num2-num3*num4; } if (m1 == "-" and m2 == "-" and m3 == "/") { result = num1-num2-num3/num4; } //---------------------- |
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