rpn calc

New Css3 attributes: calc () and css3 attributes calc I. Preface Calc () Looks like a function in javascript, but in fact it is used in Css and can be used to calculate the length (width or height ), it can automatically adjust the value based on the screen of different sizes, so that the Adaptive Layout can be easily displayed under screens of different sizes. E

A wage calculation formula is usually defined in the wage system. For example, real-time = should be issued-should be deducted and so on. To calculate such an expression, the traditional method is to use a reverse polish expression to parse it. The following describes a simple method for computing. Use RPN. php In the pear library of PHP. Usage: Include 'include/pear/RPN. php ';// $ Expression = "(2 ^ 3) +

RPN (reverse Polish Notation), a reverse polish expression. RPN calculator is a calculator that uses the reverse Polish notation method of user interaction, which is typically popular with people who deal with financial, engineering or other technical problems. 1) The function of the calculator: If no parentheses are used, input numbers are pushed into the stack. Enter the addition, subtraction, multiplicat

{stack = [Program mutablecopy]; // The local variable stack does two things for it using Introspection: first, make sure it is an array, second, you have made a variable copy, so you can eat it} // because the runprogram implementation method is to use recursion to digest everything on the stack, and it must be variable. Digest. (Recursion means loop until the final condition is true. The final condition is an empty array or a result is obtained .) Stack is static, while mutablecopy returns ID.

is less than or equal to, all the elements in the stack will be output through the stack (there will be no lower operators than the +-operator ), then press the current operator on the stack. 3. What if the entire expression traversal is complete? Of course, it is to spit out all the items in the stack !! The code is successfully compiled in the GCC 4.8.2 of ubuntu14 and the final result is output. start931-3*+82/+end After being converted to an infix expression, you can continue to use the s

1 package leetcode; 2 3 import java.util.Stack; 4 5 public class RPN { 6 public static int evalRPN(String[] tokens) { 7 Stack stack=new Stack(); 8 for(int i=0;i

();Bayi Switch(Currstring.charat (0)) { the Case+: theStack.addfirst (Operandtwo +operandone); - Break; - Case‘-‘: theStack.addfirst (Operandtwo-operandone); the Break; the Case‘*‘: theStack.addfirst (Operandtwo *operandone); - Break; the Case‘/‘: theStack.addfirst (Operandtwo/operandone); the Break;94 } the

Calc () may be a stranger to everyone, and it's unlikely to believe that Calc () is part of the CSS. Since it looks like a function, why does the function appear in css? This also makes me baffled, today a colleague told me that there is a property in CSS3 to achieve adaptive layout, first let me think of is box-sizing, but with me said can also calculate, which let me think of

Article Description: even if you do it through cumbersome methods, there is a compatibility of browsers that results in inconsistent results. Although the box-sizing in the CSS3 attribute described earlier solves this problem to some extent, today's Calc () function functionality makes it easier to achieve the above effect. Calc () may be unfamiliar to everyone, and is less likely to believe tha

Calc () may be a stranger to everyone, and it's unlikely to believe that Calc () is part of the CSS. Since it looks like a function, why does the function appear in CSS? This also makes me baffled, today a colleague told me that there is a property in CSS3 to achieve adaptive layout, first let me think of is box-sizing, but with me said can also calculate, which let me think of

Transferred from: http://www.w3cplus.com/css3/how-to-use-css3-calc-function.htmlCalc () may be a stranger to everyone, and it's unlikely to believe that Calc () is part of the CSS. Since it looks like a function, why does the function appear in CSS? This also makes me baffled, today a colleague told me that there is a property in CSS3 to achieve adaptive layout, first let me think of is box-sizing, but with

Calc () may be a stranger to everyone, and it's unlikely to believe that Calc () is part of the CSS. Since it looks like a function, why does the function appear in CSS? This also makes me baffled, today a colleague told me that there is a property in CSS3 to achieve adaptive layout, first let me think of is box-sizing, but with me said can also calculate, which let me think of

Problem: When making a page, there will always be a 100% width of the elements encountered. If the element width is 100%, as long as the element is added Border,padding,margin any value, will be the element box burst (standard mode, except IE weird mode). Although the box-sizing in the CSS3 attribute solves this problem to some extent, the Calc () function function achieves the above effect more easily.What is cal