What operation on the vectors a, b, c (below) gives the result [0 1 0 0]? a= [27,-0.3, 12, 1] b= [7, 0.5, -0.8, 2] c-[0.4.1.-7] O None of these answers O albic Oac @a>bb>c
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- Which loop outputs all of the elements of vector v(20)? int i; for( i = 0;i <= 20; ++i) cout << v.at(i) <« endl; } int i; for( i = 0; i< 20; ++i) cout << wat(i) << endl; int i; for( i = 0; i < 20; ++i) cout << vector.at(i) << endl; int i; for( i = 0; i <= 20; ++i) cout << vector.at(i) < endl;We have a vector, A, with the following integers: 22, 17, 8, 11 How does the following change those integers? A[1] <- 13 Question 2 options: no change 22, 13, 8, 11 13, 17, 8, 11 13, 13, 13, 131 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Write a function to delete a node (except the tail) in a singly linked list, given only access to that node. Supposed the linked list is 1 - 2 - 3 -> 4 and you are given the third node with value 3, the linked list should become 1 -> 2 -> 4 after calling your function. import unittest class Node: definit__(self,x): self.val x self.next = None def delete_node (node): if node is None or node.next is None: raise ValueError node.val node.next.val node.next = node.next.next class TestSuite(unittest. TestCase): def test delete_node(self): # make linkedlist 1 -> 2> 3>4 head Node (1) curr head for i in range (2, 6): curr.next = Node (i) curr = curr.next # node3 = 3 node3 head.next.next # after delete_node => 1 -> 2 -> 4 delete_node (node3) curr = head self.assertEqual (1, curr.val) curr = curr.next self.assertEqual…
- 6) While there is a built-in pop_back() method for vectors, there is no built-in pop_front method. Suppose a program needs a pop_front() method that will remove the first element from the vector. For example if the original vector is [1, 2, 3, 4, 5], then after passing in this vector to pop_front() the new resulting vector will be [2, 3, 4, 5]. Which of the options below is the correct implementation of pop_front()? Group of answer choices D-) void pop_front(vector<int> &v){ for(int i=0; i<(v.size()-1); i++)v[i+1] = v[i]; v.pop_back(); } C-) void pop_front(vector<int> &v){ for(int i=0; i<(v.size()-1); i++)v[i] = v[i+1]; v.pop_back(); } B-) void pop_front(vector<int> &v){ for(int i=0; i<v.size(); i++)v[i+1] = v[i]; v.pop_back(); } A-) void pop_front(vector<int> &v){ for(int i=0; i<v.size(); i++)v[i] = v[i+1]; v.pop_back(); } 7) Suppose a program has the following vector: [99, 23, 55, 71, 87, 64, 35, 42] The goal is to…In this problem you will implement a function called triangle_countwhich will take as input a graph object G, representing an undirectedgraph G, and will return the number of triangles in G. Do not use anyimports for this problem. To simplify the problem you may assume thateach edge is stored twice in G. That is if an edge goes from u to v then vwill be in u’s collection and u will be in v’s collection. If you would prefer,you may assume that an edge is only stored once. In either case G willneed to be regarded as undirected.Study the function matrix_mult that takes two 2D arrays and performs a matrix multiplication and returns a new two-dimensional array. Each array should be represented as a list of lists. For example, A = [[1, 2, 3], [-2, 3, 7]] B = [[1,0,0],[0,1,O],[0,0,1]] matrix_mult(A, B) [[1, 2, 3], [-2, 3, 7]] Identify all lines that are in error - that is, select all answers that are correct. def matrix_mult(A, B): A_n = len(A) A_m = len(A[0]) B_n = len(B) B_m = len(B[0]) assert A_m = B_n R_n = A_n 1. 2. 3. 4. 5. 6. 7. 8. R_m = B_m R = [[0 for j in range (R_m)] fori in range(R_n)] def row(M, r): return v[c] for v in M def col(M, c): return M[r] def dot(v1, v2): return sum([x*y for x, y in zip(v1, v2)]) for i in range(R_n): for j in range (R_m): R[i][j] - dot(row(A,i), col(8,j)) return R 9. 10. 11. 12. 13. 14.
- Code: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 32 33 34 35 36 37 38 39 40 41 E 42 43 44 45 46 47 48 49 50 51 #include 52 53 54 55 56 57 float computeBusCost (float fDistance) { float fCost; if (??[Q1]??) // 1) computeBusCost, condition 1 fCost 15.5 * fDistance; ??[Q2]?? // 2) computeBusCost, conditional construct fCost 275.0; return fCost; } float computeTrainCost(float fDistance) { float fCost; if (??[Q3]??) // 3) computeTrainCost, condition 1 fCost = 200.00; 25 } 26 27 int main() { 28 29 30 31 else if (fDistance 15) ??[04]?? // 4) compute TrainCost, fare calculation 2 ??[05]?? // 5) compute TrainCost, conditional construct fCost 550.8; return fCost; float fBalance, fDistanceBus, fDistanceTrain; float fBusCost = 0, fTrainCost = 0; printf("Enter Balance: "); scanf("%f", &fBalance); printf("Enter Distance (in km) that you will travel via Bus: "); scanf("%f", &fDistanceBus); printf("Enter Distance (in km) that you will travel via Train: "); scanf("%f", &fDistance…#!/usr/bin/env python 3 Suppose we have very large sparse vectors, which contains a lot of zeros and double. find a data structure to store them get the dot product of them def vector_to_index_value_list(vector): return [(i, v) for i,v in enumerate(vector) if v != 0.0] def dot product (iv_list1, iv_list2): product = 0 p1=len (iv_list1)-1 p2 = len (iv_list2) - 1 while p1 >= 0 and p2 >= 0: i1, v1 = iv_list1 [p1] i2, v2 = iv_list2 [p2] if i1Correct and detailed answer will be Upvoted In C Question: How can the function, matrix_initialize_unopt, be optimized and rewritten with loop collapsing? n has a size of 3000 struct fn_args { int n; int *mem1; int *mem2; }; int check(int x, int y) { return x < y; } void set(int *mat, int i, int num) { mat[i] = num; } void matrix_initialize_unopt(struct fn_args *args) { int i, j, n; int *mat1, *mat2; n = args->n; mat1 = args->mem1; mat2 = args->mem2; for (i = 0; check(i, n); i++){ for (j = 0; check(j, n); j++){ set(mat1, i * n + j, i); set(mat2, i * n + j, i+1); } } }Given the following sets: U= {1,2,3,4,5,6,7,8,}, A={1,4,5,7}, B= {2,5,6,7,}, and C= {3,4,6,7} Complete the following set operations: a. A U(BUC) b. (A N (B N C))' . c. (A N B) U ( A N C) d. (A N B')U (A N C')write a C++ function to compute the following (Set Theory) a. std::vector<int> intersection(std::vector<int>& a, std::vector<int>& b) b. std::vector<int> union(std::vector<int>& a, std::vector<int>& b) c. std::vector<int> abs_complement(std::vector<int>& u, std::vector<int>& a, std::vector<int>& b) d. std::vector<int> relative_complement(std::vector<int>& u, std::vector<int>& a, std::vector<int>& b) //a\b e. std::vector<int> delta_diff(std::vector<int>& u, std::vector<int>& a, std::vector<int>& b) //a = { x, y, z ... } void print(std::vector<int>& v, std::string& n) { std::vector<int>::iterator itr = std::begin(v); for (; itr != std::end(v); itr++) { std::cout<<(*itr)<<std::endl; } } int main(int avgc, char** avgs) { std::vector<int> u = {1, 2, 3,…College students are usually interested in their scores on exams. The following are the scores on a statistics exam: 27, 23, 28, 38, 26, 28, 42, 50, 27, 33, 42, 44, 29, 46, 18, 28, 27, 41. We represent these as a vector x in R by making the following assignmemt:x <- c(27, 23, 28, 38, 26, 28, 42, 50, 27, 33, 42, 44, 29, 46, 18, 28, 27, 41)Define the vector y using the assignment y <- cumsum(x)Define the vector w using the assignment w <- y + 2Define z by the assignment z <- c(x,y,w)x, y, w and z are vectors. Answer the following using R code.a) Calculate is the maximum value of z. b) Calculate the sum of the squares of the elements in z. c) Calculate the sample mean of z. d) Calculate the sample variance of z. e) Calculate the sample standard deviation of z f) What is the 6th element of y? (value of y[6]) g) Calculate the sample variance of x. h) Calculate the sample variance of 2*x i) What is the length(# of elements) of z? j) How many unique(different) values are in z?SEE MORE QUESTIONS