Start a new Kumite
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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.

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chengkevvs.qcarlin

Add numbers of an array

Code
Diff
  • function addArr(arr){  
  return arr.reduce((sum, num) => sum + num, 0) || null
}
    • function addArr(arr){
    • if(arr.length === 0) return null
    • let final = 0
    • arr.forEach(num => {
    • final += num
    • })
    • return final
    • function addArr(arr){
    • return arr.reduce((sum, num) => sum + num, 0) || null
    • }
anugrah18003vs.rishadharis

SQL Left Join 1 (BIE)

Code
Diff
  • -- Code Here
select
  d.city_name as kota,
  sum(c.confirmed_cases) as confirmed_cases,
  sum(c.recovered_cases) as recovered_cases,
  sum(c.death_cases) as death_cases
from cases c
left join dati d
on d.code = c.dati_code
group by 1
order by 2 desc
    • --- Code Here
    • -- Code Here
    • select
    • d.city_name as kota,
    • sum(c.confirmed_cases) as confirmed_cases,
    • sum(c.recovered_cases) as recovered_cases,
    • sum(c.death_cases) as death_cases
    • from cases c
    • left join dati d
    • on d.code = c.dati_code
    • group by 1
    • order by 2 desc
mor1nchvs.who??

Why you don't complete this kumite

Code
Diff
  • def дима_лох():
    return 'w - h - y'
    • def why():
    • def дима_лох():
    • return 'w - h - y'
user5006542vs.TheFimerCode

Return 1!

Code
Diff
  • def should_return_1():
    a = 2 - 1
    return a
    • def should_return_1():
    • return 1
    • a = 2 - 1
    • return a
rapikarosaliavs.rishadharis

Basic Use Case 2 LIMIT (BIE)

Code
Diff
  • -- Code Here
SELECT * FROM employees
ORDER BY salary DESC
LIMIT 10
    • --- Code Here
    • -- Code Here
    • SELECT * FROM employees
    • ORDER BY salary DESC
    • LIMIT 10
znlbdinvs.rishadharis

Basic Ordering 3 Multiple Order (BIE)

Code
Diff
  • -- Code Here
SELECT *
FROM transactions
WHERE customer IS NOT NULL
ORDER BY store, total_price DESC
    • --- Code Here
    • -- Code Here
    • SELECT *
    • FROM transactions
    • WHERE customer IS NOT NULL
    • ORDER BY store, total_price DESC
rapikarosaliavs.rishadharis

Basic Ordering 2 DESC (BIE)

Code
Diff
  • -- Code Here
SELECT*FROM transactions
order by total_price DESC;
    • --- Code Here
    • -- Code Here
    • SELECT*FROM transactions
    • order by total_price DESC;
landakbotakvs.rishadharis

Basic Ordering 1 ASC (BIE)

Code
Diff
  • select * from transactions
order by  total_price asc;
    • -- Code Here
    • select * from transactions
    • order by total_price asc;
ahmdxrzkyvs.rishadharis

Basic Filtering 6 Like (BIE)

Code
Diff
  • -- Code Here
SELECT *
FROM transactions
WHERE customer LIKE 'S%r';
    • --- Code Here
    • -- Code Here
    • SELECT *
    • FROM transactions
    • WHERE customer LIKE 'S%r';