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모래시계 문제 이 문제는 hackerrank에 대한 도전을 기반으로 합니다. 약간 까다로운 초보자 수준의 문제입니다. 문제는 주어진 2d 정수 배열에서 모든 모래시계 모양의 숫자 합계의 최대값을 찾는 것입니다. 6 x 6 배열(2d)이 제공됩니다. 그리고 아시다시피 모래시계 모양의 숫자가 있습니다. 첫 번째는 아래에 있습니다. 이 모래시계의 합은 (1 + 1 + 1) + (1) + (1 + 1 + 1) =... hackerrankbeginnersjava 이상한 카운터 | 설명이 포함된 Hackerrank 문제 해결 방법 다음 초에 타이머는 이전 주기의 초기 숫자의 2배로 재설정되고 카운트다운을 계속합니다. 아래 다이어그램은 처음 세 주기의 각 시간 t에 대한 카운터 값을 보여줍니다. 입력 형식 샘플 입력 샘플 출력 주어진 문제 설명에서 다음을 명확하게 볼 수 있습니다. 첫 번째 사이클을 완료하는 데 걸리는 시간: 3초 두 번째 사이클을 완료하는 데 걸리는 시간: 6초 세 번째 사이클을 완료하는 데 걸리는 시... hackerrankpythoncompetitiveprogrammingalgorithms 뒤집기 비트 문제 이 문제는 솔버에게 32비트 부호 없는 정수의 뒤집힌 비트를 인쇄하도록 요청합니다. 자세하게는 정수가 제공됩니다. 9 (base 10) 32비트 부호 없는 10진 정수 결과를 반환하도록 함수를 작성해야 합니다. 4294967286 (base 10) 모든 코드는 Javascript로 작성되지만 이 문제를 해결하기 위해 모든 언어를 사용할 수 있습니다. 9에서 4294967286으로 가는 방법은... hackerrankprogrammingbeginnersjavascript [HackerRank] Employee Salaries Write a query that prints a list of employee names (i.e.: the name attribute) for employees in Employee having a salary greater than per month who have been employees for less than months. 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MySQL예제스터디mysqlstudyhackerrankMySQL예제 HackerRank] Weather Observation Station 12 Query the list of CITY names from STATION that do not start with vowels and do not end with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northe... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Weather Observation Station 11 Query the list of CITY names from STATION that either do not start with vowels or do not end with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the ... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Weather Observation Station 10 Query the list of CITY names from STATION that do not end with vowels. Your result cannot contain duplicates. Input Format The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the... 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MySQL예제스터디mysqlstudyhackerrankMySQL예제 [SQL] Average Population of Each Continent ✅ Average Population of Each Continent 📝 문제 Given the CITY and COUNTRY tables, query the names of all the continents (COUNTRY.Continent) and their respective average city populations (CITY.Population) rounded down to the... hackerrankhackerrank [SQL] African Cities ✅ African Cities 📝 문제 Given the CITY and OUNTRY tables, query the names of all cities where the CONTINENT is 'Africa'. Note : CITY.CountryCode and COUNTRY.Code are matching key columns. Input Format The CITY and COUNTRY ... hackerrankhackerrank [SQL Runday] HackerRank - Interviews 각 공모전별로 contest_id, hacker_id, name, total_submissions의 개수, total_accepted_submissions의 개수, total_views, total_unique_views(고유 조회수?)를 조회하는 쿼리를 작성해라. challenge_id 칼럼은 사만다가 까먹은 contest_id를 갖고 있는 contest들 중 하나에 속해있는 챌린지의 id... sqlhackerrank1일1sql1일1sql [HackerRank] Revising Aggregations - The Sum Function Query the total population of all cities in CITY where District is California. Input Format The CITY table is described as follows:... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Revising Aggregations - The Count Function Query a count of the number of cities in CITY having a Population larger than 100,000 Input Format The CITY table is described as follows:... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Occupations Pivot the Occupation column in OCCUPATIONS so that each Name is sorted alphabetically and displayed underneath its corresponding Occupation. The output column headers should be Doctor, Professor, Singer, and Actor, respe... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Revising the Select Query II Query the NAME field for all American cities in the CITY table with populations larger than 120000. The CountryCode for America is USA. The CITY table is described as follows:... MySQL예제hackerrankmysqlMySQL예제 [HackerRank] Weather Observation Station 1 Query a list of CITY and STATE from the STATION table. The STATION table is described as follows: where LAT_N is the northern latitude and LONG_W is the western longitude.... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Japanese Cities' Names Query the names of all the Japanese cities in the CITY table. The COUNTRYCODE for Japan is JPN. The CITY table is described as follows:... MySQL예제스터디mysqlstudyhackerrankMySQL예제 [HackerRank] Japanese Cities' Attributes Query all attributes of every Japanese city in the CITY table. The COUNTRYCODE for Japan is JPN. The CITY table is described as follows:... MySQL예제스터디mysqlstudyhackerrankMySQL예제