neven | The `` neven '' face detector library , extracted from Android
kandi X-RAY | neven Summary
kandi X-RAY | neven Summary
This is the face detection library extracted from Android source tree. You can now use it in non-Android applications. It was originally written by Neven Vision, a company acquired by Google in 2006.
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QUESTION
This code is entirely completed. I'm having an issue where the maximum number is being selected and printed as the number right before the maximum. I can't seem to figure out how to make the program print out the actual maximum. For clarification, I'm not looking for an answer to my homework as the code is 99.9% done, I just need assistance on this one issue. Here's the code:
...ANSWER
Answered 2021-May-31 at 18:32You don't need to capture the min and max at each iteration. Just wait the end of sorting. You failed because the maximum was always the n-2 (the second maximum)
This might help. Change the end of your code with these lines.
QUESTION
The code below was taken from an example compiled with g++. The multi-threaded was 2x faster than the single-threaded.
I'm executing it in Visual Studio 2019 and the results are the opposite: the single-threaded is 2x faster than the multi-threaded.
...ANSWER
Answered 2021-Apr-30 at 15:30You are a victim of false sharing.
odd and even reside next to each other, and accessing them from two threads leads to L3 cache line contention (a.k.a false sharing).
You can fix it by spreading them by 64 bytes to make sure they reside in different cache lines, for example, like this:
QUESTION
I am building a script to copy CSV data to a Google Sheet. The CSV is converted to a 2D Array trades, and a forEach loops through each element/row of trades, named trade. I'm trying to make it check if the data is in the spreadsheet, and if it is, skip copying that entry. The way I'm identifying each trade is by the date (column A [or 0]) and trade index (column W [or 22]). If the trade has the same date and trade index, it should not be copied. As I have it now, it runs correctly against test data in the sheet (e.g. if I change the first entry, ticker UUU, to have the same date & index as one of the entries in the array), but when run a second time, it does not recognize the previously added entries (with identical dates & indexes) and it continues to copy duplicates.
How can I improve this code to work as intended and not copy duplicates, contrary to what is intended? How can I test rows in sheet and only copy entries from the array that are not already present in the sheet?
Below is the relevant code I'm working with.
This is a copy of the google sheet I'm playing with. The first entry is the test data mentioned above. The three subsequent entries are the result of the test array being copied using the below code (and other less relevant code).
...ANSWER
Answered 2021-Mar-14 at 10:06A few things:
- The variable declaration for
datawithin a for-loop is a bad/slow way to handle this. Instead, call it once outside the for-loop and then you can always append new rows, if they do not exist. - In order to check if a record already exists, you could just create one array which holds all the existing ids and test against it. Then add any new ids to it.
- I recommend to work with Objects, i.e. where the column header is the key, and the cell value is the value, e.g.
{"Gross PnL": 1.40}. - You are
breaking out of the for-loop instead ofcontinueing to the next item in the loop. Break vs Continue.
QUESTION
For python3, I originally needed to extract odd and even positions from a list and assign it to new lists, then clear the original list. I thought lists were impacted by a function call through "pass by reference". Testing some scenarios, it works sometime. Could someone please explain how exactly python3 works here?
Case 1: empty list is populated with string as expected.
...ANSWER
Answered 2021-Jan-29 at 15:32Your ultimate problem is confusing (in-place) mutation with rebinding (also referred to somewhat less precisely as "reassignment").
In all the cases where the change isn't visible outside the function, you rebound the name inside the function. When you do:
QUESTION
package task1;
import java.lang.Thread;
public class Counter implements Runnable{
int num;
boolean odd;
boolean even;
public Counter(int i,boolean odd, boolean even){
this.num=i;
this.odd=odd;
this.even=even;
}
@Override
public void run() {
if(odd==true&even==false){
System.out.print("\nOdd numbers\n");
for(int j=this.num; j<=10; j+=2){
System.out.print(j + " ");
}
}
else if (odd==true&even==true){
System.out.print("\nEven and odd numbers paired\n");
for(int j=this.num; j<=10; j+=2){
try {
Thread.sleep(600);
} catch (InterruptedException ex) {
System.out.println("The sleeping has been interruped!");
}
System.out.print(j + " " + (j+1)+" | ");
}
}
}
}
class OddEvenNums {
public static void main(String[] args) {
Counter odd = new Counter(1,true,false);
Counter evenodd = new Counter(1,true,true);
Thread oddThread = new Thread(odd);
Thread evenOddThread = new Thread(evenodd);
oddThread.start();
evenOddThread.start();
}
}
ANSWER
Answered 2020-Aug-17 at 06:55The output is totally expected, although it is a bit random in what order exactly stuff happens. What is happening here is:
oddThread writes "Odd numbers"
evenOddThread writes "Even and odd numbers paired"
oddThread writes "1 3 5 7 9" (without newline)
evenOddThread writes "1 2 | 3 4 | 5 6 | 7 8 | 9 10 |"
So, you did nothing wrong per se. But you didn't think about what would happen when you run both threads concurrently. Either don't do that (wait for oddThread to be finished before starting evenOddThread, by calling oddThread.join()), or put some synchronization in there to make sure the output is written atomically. You are somewhat lucky to get the output you got. I could also have:
- Just worked, until it randomly doesn't
- mixed the output up even worse, like 1 1 2 3 | 3 4 5 7 | 5 6 9 | 7 8 | 9 10 |
- put evenOddThread output above oddThread (probably unlikely but there is no guarantuee for how the threads get scheduled)
QUESTION
hello i want to build a programme that display even and odd numbers from given numbers i get this message error which is error C2061: syntax error : identifier 'cout' i try again to look but i cant find any.i search online and says that i should using instead of which i did but it didnt work too. How to solve this
below is my code
...ANSWER
Answered 2020-May-28 at 08:17You have problem with your else statement. here is how you should write it:
QUESTION
hello i want to build a programme that finds even and odd number from given two numbers. when i build it it says succeed but still it says warning C4700: uninitialized local variable 'number' used
when i debug it debug error appeared how to solve this? and can anybody tell me the reason it happens? thank you so much
below is the code
...ANSWER
Answered 2020-May-27 at 13:50The reason your program gives error is because you haven't initialized your variable number. I have corrected that. There were few other bugs too which would have given wrong output.I have corrected and reformatted your code a bit -
QUESTION
I am trying to extract some sentences from text data. I want to extract the sentences which correspond to medical device company released. I can run the following code:
ANSWER
Answered 2020-Apr-24 at 12:44We can get data in separate rows keeping the grp intact and keep only sentence that has "medical device company released" in it.
QUESTION
I'm trying to copy the above average values to a new array then printing the lowest value in the new array. I kept trying to copy the values but it keep copying the intair array could someone help me with that.
Please help.
ANSWER
Answered 2020-Apr-17 at 10:20As you have defined the average number average and counted the number of students above this average aboveAverage, you need to copy the values properly:
QUESTION
I'm working on a question for my assignment and this is what it's asking for: Write a program to separate odd and even integers in separate arrays. I got the part where you input whatever numbers, but when i run it.. there's an error with the for loops where i try storing the even and odds in separate arrays. We just started learning arrays(c#) this week and since the whole virus, we have been doing online class and it's just a lot more difficult. Thanks!
This is the error i got: System.IndexOutOfRangeException
for this line: odds[y] = i;
So far this is what I have:
...ANSWER
Answered 2020-Apr-13 at 14:38There's a few issues going on here, but to get over exception you're asking about, you need to initialize your evens and odds arrays with a size (currently zero). Since they could potentially be size 10, try that first -
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