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kandi X-RAY | contest Summary
kandi X-RAY | contest Summary
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QUESTION
We are trying to implement a prize for the 10th user ordering from the website.
But it is not all time user orders. The contest start today so we need to count the number of orders after the last order last night.
I have the order id of the order last night.
How can I achieve this?
So far I have this:
...ANSWER
Answered 2021-Jun-15 at 18:36You can use wc_get_orders and WC_Order_Query that provide a standard way of retrieving orders that is safe to use and will not break due to database changes in future WooCommerce versions.
Source: wc_get_orders and WC_Order_Query - Just pass a series of arguments that define the criteria for the search.
So you get:
QUESTION
Andryusha is an orderly boy and likes to keep things in their place.
Today he faced a problem to put his socks in the wardrobe. He has n distinct pairs of socks which are initially in a bag. The pairs are numbered from 1 to n. Andryusha wants to put paired socks together and put them in the wardrobe. He takes the socks one by one from the bag, and for each sock he looks whether the pair of this sock has been already took out of the bag, or not. If not (that means the pair of this sock is still in the bag), he puts the current socks on the table in front of him. Otherwise, he puts both socks from the pair to the wardrobe.
Andryusha remembers the order in which he took the socks from the bag. Can you tell him what is the maximum number of socks that were on the table at the same time? This is the problem.
https://codeforces.com/contest/782/problem/A This is the problem statement.
...ANSWER
Answered 2021-Jun-14 at 17:10There are 2*n numbers to read and process, but you processed only n numbers. Process 2*n numbers to fix.
QUESTION
I'm currently making a scoring system for an event and I'm having trouble using while loops as way to validate user input. For example I want to force the user enter their name so it can be added to a spot for a sport like tennis which I used a dictionary for. Everytime I am done asking them for their user input the while loop keeps apearing leading to a never ending while loop. Here's what I've done.
...ANSWER
Answered 2021-May-25 at 18:27Here's what I believe you are after.
A couple of changes:
Your while loops can contain the validation that you are wanting to perform as their condition. If your validation becomes more complex then you can consider moving back to a boolean to break the while loop, but it feels overly complex for your requirements.
Removal of the if statements. The whole idea of a dictionary is that you can specific a key and get a value, so having an
eliffor every potential key is overly cumbersome. Just concatenate the validated user input to derive the key.
QUESTION
I coded this statement and receiving compilation error. Code :
...ANSWER
Answered 2021-Jun-12 at 04:33I suspect you have a file named c:\mingw\lib\gcc\mingw32\6.3.0\include\c++\ext\pb_ds\detail\resize_policy\hash_standard_resize_policy_imp.hpp0000644. Rename that file to remove the 0000644 from the end of it.
QUESTION
import java.util.*;
public class Main {
public static void main (String[] args) {
Solution solution = new Solution();
int[] res = solution.assignTasks(new int[]{3,3,2}, new int[]{1,2,3,2,1,2});
}
}
class Solution {
public int[] assignTasks(int[] servers, int[] tasks) {
PriorityQueue free = new PriorityQueue(); // (wt, id, time)
PriorityQueue busy = new PriorityQueue(); // (time, wt, id)
for (int i = 0; i < servers.length; i++) {
free.add(new Pair(servers[i], i, 0));
System.out.println("Free Added " + i + " " + servers[i] + " " + i + " " + 0 + " " + free.size());
}
int[] ans = new int[tasks.length];
for (int i = 0; i < tasks.length; i++) {
Pair b = busy.peek();
while (b != null && b.a <= i) {
busy.poll();
System.out.println("Busy Polled " + i + " " + b.a + " " + b.b + " " + b.c + " " + busy.size());
free.add(new Pair(b.b, b.c, b.a));
System.out.println("Free Added " + i + " " + b.b + " " + b.c + " " + b.a + " " + free.size());
b = busy.peek();
}
Pair p = free.poll();
int wt = p.a;
int id = p.b;
// int time = p.c;
System.out.println("Free Polled " + i + " " + p.a + " " + p.b + " " + p.c + " " + free.size());
ans[i] = id;
busy.add(new Pair(i + tasks[i], wt, id));
System.out.println("Added to Busy " + i + " " + (i + tasks[i]) + " " + p.a + " " + p.b + " " + busy.size());
}
return ans;
}
}
class Pair implements Comparable {
int a, b, c;
Pair(int x, int y, int z) {
a = x;
b = y;
c = z;
}
public int compareTo(Pair p) {
if (this.a == p.a) {
if (this.b == p.b) return this.c - p.c;
return this.b = p.b;
}
return this.a - p.a;
}
}
ANSWER
Answered 2021-May-30 at 09:33It is not entirely clear, but I think your problem is caused by an incorrect implementation of compareTo.
QUESTION
The topic link:https://codeforces.com/contest/109/problem/D
For the question, I'm time limit exceeded on test41
I guess that the data structure used is not appropriate, but I have thought about it for a long time and I don't know where to adopt a good data structure, please give me some advice.
algorithm ideas:
This approach is somewhat similar to selection sort. First, find a lucky number, then swap the position with the first number, then start from the second, find the smallest number, and then swap it with the lucky number, so that the smallest number starting from the second is placed at the first position, the lucky number is now in another position, and its position is recorded. Then swap the lucky number with the second number, and then repeat the above process. Special attention should be paid to the fact that we need to record the position of the lucky number we selected after sorting because the process before and after the position is slightly different and needs to be compared(This is explained in the code comments).
...ANSWER
Answered 2021-May-29 at 05:54The nested loop used to find MINID makes the runtime quadratic in n:
QUESTION
So I designed this code (given below) for the question & it seems to be giving all the answers there are but for some reason I'm not able to pass my test cases in the Hackerrank Question except for the sample one.
My Code :
...ANSWER
Answered 2021-May-29 at 00:12You have three problems with this code:
- An actual bug. You don't handle when a prime divides the number multiple times. I'm fairly sure the four lines before the
printlnoutput are a workaround you put in when you encountered a failure this causes, that fixed the specific failure you found but don't actually address the root cause. I just tested it, your code outputs 3 for the input 252. The correct output for 252 is 7. - Part of your code invokes a library method that may be significantly expensive. You should not be using
isProbablePrime. - Your algorithm's logic scales poorly. Hackerrank's test cases probably include something where the correct output is something like 20 digits long. A major point of Project Euler is that it's not enough to write code that will find the correct answer. You need to write code that will find the correct answer efficiently. To fix this, you will need new logic for the fundamental design of the program.
QUESTION
I'm passing data from this GraphQL query below to a nested map function, but I keep getting node.map is not a function even though it's inside an array. I can't see what I'm doing wrong here, so any guidance would be appreciated. ;)
Query
...ANSWER
Answered 2021-May-28 at 18:51Luiz, the map function in JavaScript is associated with arrays. You're trying to use the map function on node, which is an object.
Use the code below to get your desired result.
QUESTION
I am working on a Resume builder website in django. what I wanted is when a user tries to edit prebuild resume template I want to store data in local storage. So that users stay on the page even after refresh. What I have done is created an object which is storing every value of HTML then I have set it to local storage. but when I getItem then It is fetching only a max 5 elements after that when I change any content in the template it is storing into local storage but not fetching it. Please help me.
...ANSWER
Answered 2021-May-22 at 06:56You can not read properties containing hyphens in the property name like this :
'-', '+', '*' etc. are operands. You can understand why they will not work.
QUESTION
EDIT :
i added the folliwing in my .csproj
...ANSWER
Answered 2021-May-20 at 02:32You can try the following steps to show the console together with form.
First, please add a project called Widows Forms Class Library in your visual studio 2019. (Please choose .net core 3.0)
Second, please add a form to the library.
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