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더보기 A non-empty array A consisting of N integers is given. Array A represents numbers on a tape. Any integer P, such that 0 < P < N, splits this tape into two non-empty parts: A[0], A[1], ..., A[P − 1] and A[P], A[P + 1], ..., A[N − 1]. The difference between the two parts is the value of: |(A[0] + A[1] + ... + A[P − 1]) − (A[P] + A[P + 1] + ... + A[N − 1])| In other words, it is the absolute di..

더보기 An array A consisting of N different integers is given. The array contains integers in the range [1..(N + 1)], which means that exactly one element is missing. Your goal is to find that missing element. Write a function: def solution(A) that, given an array A, returns the value of the missing element. For example, given array A such that: A[0] = 2 A[1] = 3 A[2] = 1 A[3] = 5 the function shou..

더보기 A small frog wants to get to the other side of the road. The frog is currently located at position X and wants to get to a position greater than or equal to Y. The small frog always jumps a fixed distance, D. Count the minimal number of jumps that the small frog must perform to reach its target. Write a function: def solution(X, Y, D) that, given three integers X, Y and D, returns the minima..

더보기 A non-empty array A consisting of N integers is given. The array contains an odd number of elements, and each element of the array can be paired with another element that has the same value, except for one element that is left unpaired. For example, in array A such that: A[0] = 9 A[1] = 3 A[2] = 9 A[3] = 3 A[4] = 9 A[5] = 7 A[6] = 9 the elements at indexes 0 and 2 have value 9, the elements ..

더보기 An array A consisting of N integers is given. Rotation of the array means that each element is shifted right by one index, and the last element of the array is moved to the first place. For example, the rotation of array A = [3, 8, 9, 7, 6] is [6, 3, 8, 9, 7] (elements are shifted right by one index and 6 is moved to the first place). The goal is to rotate array A K times; that is, each elem..

더보기 A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the binary representation of N. For example, number 9 has binary representation 1001 and contains a binary gap of length 2. The number 529 has binary representation 1000010001 and contains two binary gaps: one of length 4 and one of length 3. The number 20 has bina..

더보기 A string S consisting of N characters is called properly nested if: S is empty; S has the form "(U)" where U is a properly nested string; S has the form "VW" where V and W are properly nested strings. For example, string "(()(())())" is properly nested but string "())" isn't. Write a function: def solution(S) that, given a string S consisting of N characters, returns 1 if string S is properl..

더보기 You are given two non-empty arrays A and B consisting of N integers. Arrays A and B represent N voracious fish in a river, ordered downstream along the flow of the river. The fish are numbered from 0 to N − 1. If P and Q are two fish and P < Q, then fish P is initially upstream of fish Q. Initially, each fish has a unique position. Fish number P is represented by A[P] and B[P]. Array A conta..

A string S consisting of N characters is considered to be properly nested if any of the following conditions is true: S is empty; S has the form "(U)" or "[U]" or "{U}" where U is a properly nested string; S has the form "VW" where V and W are properly nested strings. For example, the string "{[()()]}" is properly nested but "([)()]" is not. Write a function: class Solution { public int solution..

해피해킹 키맵 변경하기 1. keymap? 각종 기계식 키보드를 구입해서 사용하다 보면 키맵을 변경할 필요가 생깁니다. 그 이유는 바로 배열 때문에! 맥 전용 / 윈도우 전용 / 맥 윈도우 호환 / 특수 배열(hhkb...) 등등 각자 다른 키보드 배열을 손에 익숙한 배열로 커스텀을 해야 할 필요성을 느끼기 때문입니다. 맥의 경우에는 간단합니다. 왜냐면 karabiner라는 최고의 프로그램이 있기 때문입니다. 하지만 윈도우의 경우에는 만족스러운 키맵 변경 프로그램을 발견하지 못했다가 드디어 찾게되어 기쁜 마음으로 정리해봅니다. 2. 설치하기 mac https://karabiner-elements.pqrs.org/ windows https://github.com/microsoft/PowerToys/rele..