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SW/알고리즘 문제풀이42

[Codility] Lesson7 - Stacks and Queues: Fish Problem 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 c.. 2020. 12. 28.
[Codility] Lesson6 - Sorting: Max Product of Three Problem A non-empty array A consisting of N integers is given. The product of triplet (P, Q, R) equates to A[P] * A[Q] * A[R] (0 ≤ P < Q < R < N). For example, array A such that: A[0] = -3 A[1] = 1 A[2] = 2 A[3] = -2 A[4] = 5 A[5] = 6 contains the following example triplets: (0, 1, 2), product is −3 * 1 * 2 = −6 (1, 2, 4), product is 1 * 2 * 5 = 10 (2, 4, 5), product is 2 * 5 * 6 = 60 Your goal .. 2020. 12. 23.
[Codility] Lesson6 - Sorting: Distinct Problem Write a function int solution(vector &A); that, given an array A consisting of N integers, returns the number of distinct values in array A. For example, given array A consisting of six elements such that: A[0] = 2 A[1] = 1 A[2] = 1 A[3] = 2 A[4] = 3 A[5] = 1 the function should return 3, because there are 3 distinct values appearing in array A, namely 1, 2 and 3. Write an efficient algo.. 2020. 12. 22.
[Codility] Lesson5 - Prefix Sums: Genomic Range Query Problem A DNA sequence can be represented as a string consisting of the letters A, C, G and T, which correspond to the types of successive nucleotides in the sequence. Each nucleotide has an impact factor, which is an integer. Nucleotides of types A, C, G and T have impact factors of 1, 2, 3 and 4, respectively. You are going to answer several queries of the form: What is the minimal impact fact.. 2020. 12. 21.
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