BEst

JDK(Java Development Kit) : 자바에서 제공되는 개발용 라이브러리. 계속 버젼이 올라가고 있음 JRE(Java Runtime Environment) : 자바 프로그램이 실행되는 환경. 8.0까지 무료로 제공 됨 JVM(Java Virtual Machine) : 자바 가상 머신으로 프로그램이 실행되는 환경인 JRE 가 설치되어 있어야 함 Literal 자체가 4byte로 잡혀있기때문에, 4byte를 넘는건 Long으로 잡아야한다. -> 끝에 L을 넣으면 8byte로 잡힌다. -묵시형(프로그램이 자동 변환) , 명시적(프로그래머가 선언) eg. 정수->실수 (10-> 10.0) ※주의 int iNum=255; byte bNum = (byte)iNum; -> 이런 경우, byte에 255값..

An isogram is a word that has no repeating letters, consecutive or non-consecutive. Implement a function that determines whether a string that contains only letters is an isogram. Assume the empty string is an isogram. Ignore letter case. Example: (Input --> Output) "Dermatoglyphics" --> true "aba" --> false "moOse" --> false (ignore letter case) def is_isogram(string): string=string.upper() for..

DESCRIPTION: Complete the function that accepts a string parameter, and reverses each word in the string. All spaces in the string should be retained. Examples "This is an example!" ==> "sihT si na !elpmaxe" "double spaces" ==> "elbuod secaps" def reverse_words(text): ans="" alist=text.split(' ') print (alist) for i in range(len(alist)): alist[i]=alist[i][::-1] print (alist) for i in range(len(a..

DESCRIPTION: Your goal in this kata is to implement a difference function, which subtracts one list from another and returns the result. It should remove all values from list a, which are present in list b keeping their order. array_diff([1,2],[1]) == [2] If a value is present in b, all of its occurrences must be removed from the other: array_diff([1,2,2,2,3],[2]) == [1,3] def array_diff(a, b): ..

DESCRIPTION: You are going to be given a word. Your job is to return the middle character of the word. If the word's length is odd, return the middle character. If the word's length is even, return the middle 2 characters. #Examples: Kata.getMiddle("test") should return "es" Kata.getMiddle("testing") should return "t" Kata.getMiddle("middle") should return "dd" Kata.getMiddle("A") should return ..

DESCRIPTION: The goal of this exercise is to convert a string to a new string where each character in the new string is "(" if that character appears only once in the original string, or ")" if that character appears more than once in the original string. Ignore capitalization when determining if a character is a duplicate. Examples "din" => "(((" "recede" => "()()()" "Success" => ")())())" "(( ..

Given an array of ones and zeroes, convert the equivalent binary value to an integer. Eg: [0, 0, 0, 1] is treated as 0001 which is the binary representation of 1. Examples: Testing: [0, 0, 0, 1] ==> 1 Testing: [0, 0, 1, 0] ==> 2 Testing: [0, 1, 0, 1] ==> 5 Testing: [1, 0, 0, 1] ==> 9 Testing: [0, 0, 1, 0] ==> 2 Testing: [0, 1, 1, 0] ==> 6 Testing: [1, 1, 1, 1] ==> 15 Testing: [1, 0, 1, 1] ==> 11..

Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may not use the same element twice. You can return the answer in any order. Example 1: Input: nums = [2,7,11,15], target = 9 Output: [0,1] Explanation: Because nums[0] + nums[1] == 9, we return [0, 1]. Ex..

Renaming $ mv revert.md reverted.md - 이름을 바꾸려고 했는데, 깃에서는 원래 파일을 지우고, 새로운 파일이 생기게된다. $ git mv revert.md reverted.md 를 사용하면 이름이 바뀐다. $ git commit - #Fix: Rename Undo $ git restore reverted.md - undo at the point it is commited $ git restore . - undo all the files in the current, sub directory Unstaging git reset HEAD reverted.md - Unstaging (Before commiting) Edit latest Commit $ git commit --amen..

자습시간에 어제 배웠던 Git add, commit, push를 복습해봤다. 우선 Github에서 새로운 Repository를 생성. Spiderman-Revise. Git Bash에서 Dev directory에 $ Git clone [HTTPS 주소]을 했다. touch spiderman.md 로 파일 생성. $ git branch TobeyMaguire 로 브랜치 생성. $ git branch AndrewGarfield $ git branch Tom_Holland 나머지 동일 spiderman.md git add, git commit을 실행하지 않아서인지 branch들에 파일이 없다.. 다시 브랜치들을 다 지우고, $ git branch -D TobeyMaguire, $ git~~~, ~~~~ mai..