sorting

问题 I want to sort doubly linked list by next_id value. My DLL: const dll = [ {id: '22', prev_id: '41', next_id: '45'}, {id: '45', prev_id: '22', next_id: null}, {id: '41', prev_id: '14', next_id: '22'}, {id: '14', prev_id: null, next_id: '41'}, ] As a result: const dll_result = [ {id: '14', prev_id: null, next_id: '41'}, // next item - 41 {id: '41', prev_id: '14', next_id: '22'}, // next item - 22 {id: '22', prev_id: '41', next_id: '45'}, // next item - 45 {id: '45', prev_id: '22', next_id: null

问题 I am new to Unix Programming. Could you please help me to solve the question. For example, If the input file has the below content RollNo Name Score 234 ABC 70 567 QWE 12 457 RTE 56 234 XYZ 80 456 ERT 45 The output will be ABC I tried something like this sort -k3,3 -rn -t" " | head -n2 | awk '{print $2}' 回答1: Using awk awk 'NR>1{arr[$3]=$2} END {n=asorti(arr,arr_sorted); print arr[arr_sorted[n-1]]}' Demo: $cat file.txt RollNo Name Score 234 ABC 70 567 QWE 12 457 RTE 56 234 XYZ 80 456 ERT 45

问题 I am using the below code to sot my Listbox data numerically. I use the following IF statement to check if data is numeric (some data is not): If IsNumeric(.List(i, 4)) And IsNumeric(.List(j, 4)) Then My Listbox data is sorted correctly. However because of the above IF statement the sorting process ignores non-numeric data. I need to sort the non numeric data to the bottom of the Listbox. Public Sub BubbleSort() Dim i As Long Dim j As Long Dim Temp4 As Variant, Temp3 As Variant, Temp2 As

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 working on some suitable way of sorting an array on the basis of search string. For example here is an array var myarray = ["2386", "1234", "3867"]; and here is the string which I want to search in the above array var searchkey = 123; Upon sorting on the basis of search string, the result should be like this var filtered_array= ["1234", "2386", "3867"]; What I want is for(var i = 0; i < myarray.length; i++) { if (myarray[i].indexOf(searchkey) > 1) { filtered_array.push(myarray[i]); }else

问题 In Excel When I sort the texts in ascending order, results shows as below. Text with the underscore character precedes the others. And in Excel cell, when I type in ="_" < "A", then "True" shows as expected. C10_ C10A C20_ C20A But, In Oracle, when I sort in ascending order, results shows as below. (I guess, Oracle treats '_' < 'A' False) C10A C10_ C20A C20_ How can I make Oracle sort the list exactly as Excel does? I have changed ASC to DESC, but the result was not what I expect. My sorting

问题 I would like to sort my values in the JSON file order by "createdAt" and use these values in the plot function. As you can see this column stores date value so I've converted it. And I've applied the sort function but when I see the output of the data, it seems sort does not apply. data = loadjson('C:/data/default.json'); count_data = sum(cellfun(@(x) numel(x),data.Location)); %returns 21 for i=1:count_data createdAt= cellfun( @(cellElem) cellElem.createdAt, data.Location ,'UniformOutput'

问题 I have to find time complexity of quick sort for BEST CASE INPUT in a c program & i have selected the last element of array as pivot. Now i know what input values i have to enter for best case, i.e., keep 1st middle element at the last place(pivot) & next pivot should be the next middle element. But i have to generate this kind of best case input array of very big sizes like 1000, 5000, 100000.., for quick sort. I can code, but can anyone please help me understand how to generate that kind of

问题 A minimal numpy structured array generator: import numpy as np index = np.arange(4) A = np.stack((np.sin(index), np.cos(index)),axis=1) B = np.eye(4).astype(int) C = np.array([1, 0, 1, 0], dtype=bool) goodies = [(a, b, c, d) for a, b, c, d in zip(index, A, B, C)] dt = [('index', 'int'), ('two_floats', 'float', 2), ('four_ints', 'int', 4), ('and_a_bool', 'bool')] s = np.array(goodies, dtype=dt) generates the minimal numpy structured array: array([(0, [ 0. , 1. ], [1, 0, 0, 0], True), (1, [ 0

问题 In my current programming class I've been tasked with creating a program that takes user input course (Consisting of course name, course grade, course units variables) and storing them in a dynamically generated array with a maximum size of 10. Due to my unfamiliarity with object oriented programming and classes however I'm finding anything beyond the pure creation of the classes to be very difficult. I've figured out a way to create the entries, as well as how to edit them after they've been