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Kumite (ko͞omiˌtā) is the practice of taking techniques learned from Kata and applying them through the act of freestyle sparring.

You can create a new kumite by providing some initial code and optionally some test cases. From there other warriors can spar with you, by enhancing, refactoring and translating your code. There is no limit to how many warriors you can spar with.

A great use for kumite is to begin an idea for a kata as one. You can collaborate with other code warriors until you have it right, then you can convert it to a kata.


Hello Geeks! Today we will write a Python script to make webcam software using Python & OpenCV. Thanks to Python you can do it in just 7 lines of code! That's GREAT right? So let's deep dive into it.

For this, you need to install the OpenCV package. Write the following command to install it. I assume that you have already installed python ; )

On the terminal/command line:

pip3 install cv2

Now we are good to go!

First import the required packages
After this, create the camera object using the VideoCapture(source) method of cv2. If you wish to use your built-in camera then pass 0 as the argument, otherwise, if you want to use any external camera put 1 or 2 or any other value and see if it detects your camera.
Finally, start an infinite event loop.
All done! Now release the camera and terminate the window.
Now combine all of these and congratulations you have made your webcam software.

import os
import cv2

cv2.VideoCapture(0) #In this case I want to use my built-in camera

while True:
    success,image = #read the image from camera and store it.
    cv2.imshow("demo",image) #show the image in a window; Window name is "demo"
    value = cv2.waitKey(1) #wait 1 ms; listen for any keystroke; if pressed, store its ASCII value
    if value==32: #if spacebar is pressed [ASCII value of spacebar is 32]
        location = f"{os.getcwd()}/photo.jpg" #this is location & filename of the image
        cv2.imwrite(location,image) #Finally save the image in the above location
        break #break from the event loop
cam.release() #releasing the camera (In other words, turning off the camera)
cv2.destroyAllWindows() #close the window that was opened for displaying image.
public class Multiply {
  public int multiply(int a, int b) {

Kumite so when translating I can copy paste code instead of having to write this for each one.

       01 INPUT-01      PIC 9(8).
       01 RESULT        PIC 9(8).
      * Write your program here

Implement binary search. Given an array and a number to look for, return the index of the element in the array.

function binarySearch(numbers, element) {

write a function that returns the sum of two numbers.

if input is 1 and 1 -> return 2

if input is 5 and 10 ->return 15

function sum($a ,$b) {
  return $a + $b;
public class Adder {
  public static int AddAllContent(int[] numbersToAdd) {      
    int sum = 0;

    for (int i : numbersToAdd)
        sum += i;

    return sum;
public class Kata {
    public static boolean findStringInString(String a, String b) {
        // Return whether String A is found in String B
        return false;
public class Kata {
    public static int findIndex (int[] my_array, int t) {
        // Find the index of t
        return 4;
public class Kata {
    public static int[] sortValues(int[] my_array, int size) {
        // Given an array of size N containing only 0s, 1s, and 2s; 
        // sort the array in ascending order.
        int[] returnArray = {0,0,0,0,1,1,2,2};
        return returnArray;