sorting

问题 Beginner in Java using an old textbook and Head First: Java books to figure some stuff out. I have three arrays all parallel. I need to be able to sort by Title, Author, or Page Count based on user selection. I can sort one using Arrays.sort() but I'm getting hung up on how to sort the other two arrays to correspond to the new sorted one. Say I sort the BookTitle array, but I'm going to need to display the proper author and page count of its respective arrays and I'm stumped. do { entry =

问题 I have a script that runs through football fixtures, each day it will work out the teams played, wins, draws, losses, gd and points. At the end of each day it will upload the table to the database, so that I have a different table for each day (I have my reasons for it lol) Problem is here is an example my code that creates the array. if (array_key_exists(strval($firstDate), $matches)) { // Matches Exist foreach($matches[$firstDate] as $matchList) { $homeName = $matchList['homeTeamName'];

问题 I'm trying a way that when given a string of names which are first and last names, where names are split by ; and first name split to last name by : -> "Fred:Corwill;Wilfred:Corwill;Barney:Tornbull;Betty:Tornbull;Bjon:Tornbull;Raphael:Corwill;Alfred:Corwill" I want to return a string which is sorted out all the names as uppercase and sorted alphabetically according to the last name and the ones that share the same last name then sort again (secondary sort) between the first names of the

问题 I'm trying a way that when given a string of names which are first and last names, where names are split by ; and first name split to last name by : -> "Fred:Corwill;Wilfred:Corwill;Barney:Tornbull;Betty:Tornbull;Bjon:Tornbull;Raphael:Corwill;Alfred:Corwill" I want to return a string which is sorted out all the names as uppercase and sorted alphabetically according to the last name and the ones that share the same last name then sort again (secondary sort) between the first names of the

问题 I'm fairly new to programming; I've only been studying Python for a few weeks. I've been given an exercise recently that asks me to generate a list of integers, and then manually sort the numbers from lowest to highest in a separate list. import random unordered = list(range(10)) ordered = [] lowest = 0 i = 0 random.shuffle(unordered) lowest = unordered[0] while i in unordered: if unordered[i] < lowest: lowest = unordered[i] i += 1 if i >= len(unordered): i = 0 ordered.append(lowest)

问题 I'm fairly new to programming; I've only been studying Python for a few weeks. I've been given an exercise recently that asks me to generate a list of integers, and then manually sort the numbers from lowest to highest in a separate list. import random unordered = list(range(10)) ordered = [] lowest = 0 i = 0 random.shuffle(unordered) lowest = unordered[0] while i in unordered: if unordered[i] < lowest: lowest = unordered[i] i += 1 if i >= len(unordered): i = 0 ordered.append(lowest)

问题 I know that you can easily sort numbers with an array, but my assignment for class is that I need to sort four numbers in descending order using if statements and not arrays . Here is my code so far: package integersort; import java.util.Scanner; public class IntegerSort { public static void main(String[] args) { Scanner userInput = new Scanner(System.in); int firstNum, secondNum, thirdNum, fourthNum; //inputted numbers System.out.println("Enter first number:"); firstNum = userInput.nextInt()

问题 Need to sort class Dir by 3 String fields. First one: sort by 1 value - s1 ; Then sort by String length - s1+s2+s3 ; After sort by 2 value - s2 ; And sort by 3 value - s3 . In my code its works for value 1 and String length sorting, but sorting by 2 value does not works. How i can sorting class Dir by multiple values? Class Dir: public class Dir { private String s1 = ""; private String s2 = ""; private String s3 = ""; public Dir(String s1){ this.s1 = s1; } public Dir(String s1, String s2){

问题 I have been asking questions about creating a sorting method to sort a linked list of contact names read in from a text file and have advanced from my previous question:(What is a better method to sort strings alphabetically in a linked list that is reading in lines from a text file?), but am now running into two errors after creating a separate class called AlphaSorter.java with the method compareTo() which is intended to override my sort() method in my Linked List program/class called

问题 I am studying sort_flags at this page on PHP Manual. And I don't understand what difference each of these flags represents. There are only 6 flags, can someone please help me to understand the difference between them. Maybe with some examples. I would be very thankful. 回答1: Array used for testing: $toSort = array(2, 1, "img1", "img2", "img10", 1.5, "3.14", "2.72"); Note that 3.14 & 2.72 are strings. Using SORT_REGULAR flag (compare items normally): Array ( [0] => 2.72 [1] => 3.14 [2] => img1