compare

问题 This question already has answers here : Closed 8 years ago . Possible Duplicates: Simplest code for array intersection in javascript How to merge two arrays in Javascript There are three arrays: var items = Array(523,3452,334,31,5346); var items_used = Array(3452,31,4123); var items_new = Array(); First one is general, second is the items currenly in use. Third one includes all the items from the first array, witch are not mentioned in second. How do I remove from the first array items,

问题 I have 2 Arrays in 2 variables and both of them containing exactly the same values in the fields (in the 1st array = "image_id"-field and in the 2nd array = "ID-field"). I need to compare the 2 fields and would like to output the imagepath string of the 1st array (if the "ID"-field of 1st array and the field of 2nd array are equal) Something like this: if "2146" from 1st multi-array is equal to "2146" from 2nd multi-array, then echo apple.jpg.. But how does that work? Its really freakin me

问题 I have a problem trying to get an araylist of "tags" in String from 2 ArrayList of objects . I have tried the following but looks like my ideal output is not what I have expected. Here is the code: public class TestList { public static void main(String []args) { Tag tag1 = new Tag(); tag1.setId(15); tag1.setTag("Test"); Tag tag2 = new Tag(); tag2.setId(15); tag2.setTag("Oracle"); Tag tag3 = new Tag(); tag3.setId(16); tag1.setTag("OHNO CANNOE"); List<Tag> tagList = new ArrayList<Tag>();

问题 We are using Ranorex 5.02 We need to compare values (numbers) in website UI and generated pdf file these values always are the same. Each time the system will generate new values for UI and pdf file. We need to check that the new generated values are correct. Adding validation methods not really help because the system recorded actual number and after running test script again validation is failed. We tried to create variables in validations the system displays unbounded variable message. Any

问题 I have list of objects and I have list of strings. List<String> states = new List<String>(); states.add("wisconsin"); states.add("Florida"); states.add("new york"); List<Foo> foo = new List<Foo>(); foo.add(new Foo(2000, name1, "wisconsin")); foo.add(new Foo(1000, name2, "california")); foo.add(new Foo(300, name3, "Florida")); An object have three properties: int age, string name and string state. and I have added these objects to the list. Second list consists of string of "states". How I can

问题 public void sortDatabase(){ for(int j=0;j<productDatabase.size()-1;j++){ for(int i =0;i<productDatabase.size()-j-1;i++){ if(compareTo(i)){ Collections.swap(productDatabase,i,i++ ); //Με την Χρήση της Collections βιβλιοθήκης κάνω SWAP! Πρέπει να βάλω την βιβλιοθήκη όμως! } } } } public boolean compareTo(int index){ if(productDatabase.get(index).getPrice() > productDatabase.get(index++).getPrice()){ return true; } else return false; } Last time i posted my answer in a very bad way. Sorry for my

问题 When we use strcmp(str1, str2); or str1.compare(str2); the return values are like -1, 0 and 1, for str1 < str2, str1 == str2 or str1 > str2 respectively. The question is, is it defined like this for a specific reason? For instance, in binary tree sorting algorithm, we push smaller values to the left child and larger values to the right child. This strcmp or string::compare functions seem to be perfect for that. However, does anyone use string matching in order to sort a tree (integer index

问题 I'm currently writing an aggregation query for MongoDB in my Spring project in which I'm using $project operator. Within this operator I would like to compare two fields in order to return the result as projected "matches" key value. Here's the mongoDB shell equivalent (which works): {$project: {matches: {$eq: ["$lastDate", "$meta.date"]} } } I've read Spring Data MongoDB documentation and found some useful info about ProjectionOperator's 'andExpression' method which uses SpEL. The result

问题 Basically I want to write a little batch script that does the following - I have two folders, A and B... A has 10 files and B has 100. I want to compare the names of the files in each folder and if any in B have the same name as in A, then to copy them to folder A and overwrite the original file. I was trying to start off by doing a "for" command on folder A but then I would have to follow that with an IF to compare the filenames which I have no idea how to express correctly for /r "C:

问题 I'm trying to write an Equality Comparer for a simple class with 3 fields, like so: public class NumberClass { public int A { get; set; } public int B { get; set; } public int C { get; set; } } My condition for two objects of NumberClass to be equal is if Obj1.A == Obj2.A || Obj1.B == Obj2.B (in other words, OR), Obj1 and Obj2 being instances of NumberClass . I can easily write the Equals() of my comparer as follows, but I don't know what to do with my GetHashCode() method. public bool Equals