sorting

问题 I have a jagged array and I need to sort it by the column "2": example: array[x][2] What I have is about 64 where the "x" is and in the second column (where the "2" is) I have 4 different options, but I need to sort by the second option. 回答1: Just use OrderBy : array = array.OrderBy(inner => inner[2]).ToArray(); If it's important to use an in place sort then you can use Array.Sort : Array.Sort(array, (first, second) => string.Compare(first[2], second[2])); 来源： https://stackoverflow.com

问题 I have a jagged array and I need to sort it by the column "2": example: array[x][2] What I have is about 64 where the "x" is and in the second column (where the "2" is) I have 4 different options, but I need to sort by the second option. 回答1: Just use OrderBy : array = array.OrderBy(inner => inner[2]).ToArray(); If it's important to use an in place sort then you can use Array.Sort : Array.Sort(array, (first, second) => string.Compare(first[2], second[2])); 来源： https://stackoverflow.com

问题 This question already has answers here : Is there a built in function for string natural sort? (19 answers) Sorting integers in a csv file - python (2 answers) Closed 5 years ago . I have some trouble making a code that arranges a .txt file in numerical order. The problem I'm having is when ordering numbers 77, 45, 85, 100 in the .txt file it orders it as 100, 45, 77, 85; 100 being the lowest. Not sure how I would correct that as I want 100 to be the highest. This is what I have so far:

问题 I typically know how to order my dates in ggplot but something is different about this data and I'm hoping someone can clarify for me. Consider: ggplot(tmp3)+ geom_boxplot(aes(x=simdte,y=r2))+ facet_wrap(~simyr, scales='free_x')+ theme(axis.text.x=element_text(angle=45,hjust=1)) The dates are in alphanumeric order but now I want to format the x axis labels so I tried: ggplot(tmp3)+ geom_boxplot(aes(x=reorder(strftime(strptime(simdte,'%Y%m%d'),'%b-%d'),as.numeric(simdte)),y=r2))+ facet_wrap(

问题 I try the following c++ code to sort linked list Items while inserting value from the keyboard. Here I want to insert values at the beginning, somewhere in the middle and at the end in one Insertion function using while loop. my focus is only on how to insert and delete by finding the exact position using logical operations. Could you please help me in coding a linked list that can sort while inserting an item in c++ #include <iostream> using namespace std; struct listItem { //creating a node

问题 I try the following c++ code to sort linked list Items while inserting value from the keyboard. Here I want to insert values at the beginning, somewhere in the middle and at the end in one Insertion function using while loop. my focus is only on how to insert and delete by finding the exact position using logical operations. Could you please help me in coding a linked list that can sort while inserting an item in c++ #include <iostream> using namespace std; struct listItem { //creating a node

问题 I try the following c++ code to sort linked list Items while inserting value from the keyboard. Here I want to insert values at the beginning, somewhere in the middle and at the end in one Insertion function using while loop. my focus is only on how to insert and delete by finding the exact position using logical operations. Could you please help me in coding a linked list that can sort while inserting an item in c++ #include <iostream> using namespace std; struct listItem { //creating a node

问题 I want to link and sort in descending order a two dimensional array. I coded my program in a way so that you can print the array but it is not sorted. How can I make it sorted? This is a program to calculate the number of hours worked by 8 employees during the week (7 days), and print them out in descending order: public class WeeklyHours { public static void main(String[] args) { double[][] employeeWorkHours = { { 2, 4, 3, 4, 5, 8, 8 }, { 7, 3, 4, 3, 3, 4, 4 }, { 3, 3, 4, 3, 3, 2, 2 }, { 9,

问题 I am trying to store data in Android. I am using the SharedPreferences . And I am retrieving these data by using: SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE); Map<String, ?> keys = myPrefs.getAll(); for (Map.Entry<String, ?> entry : keys.entrySet()) { Log.i("map values", entry.getKey()); //some code } EDIT: But data retrieved are not in the same order as they were inserted. How to get the same order? 回答1: Copy the resulting Map into an implementation

问题 I am using a Query which sorts like; 1 2 3A 3 4A 4 But I want to get it 1 2 3 3A 4 4A What I am using is SELECT * FROM `sections` ORDER BY CAST(`act` as DECIMAL) ASC What I exactly want is First Number then Alphanumeric 3 then 3A 回答1: Considering that you'll always have integer first and then characters in your acts column. Normally this is called Natural Sorting . Problem Understanding: Normal sorting works perfectly when we're dealing with variations of a single number i.e. 1, 1A, 1B, 1AB..