"""3. Write a function validSolution/ValidateSolution/valid_solution()that accepts a 2D array representing a Sudoku board, and returns trueif it is a valid solution, or false otherwise. The cells of the sudokuboard may also contain 0's, which will represent empty cells.Boards containing one or more zeroes are considered to be invalid solutions.The board is always 9 cells by 9 cells, and every cell only contains integersfrom 0 to 9. (More info at: http://en.wikipedia.org/wiki/Sudoku)""" # Using dict/hash-tablefrom collections import defaultdict def valid_solution_hashtable(board):    for i in range(len(board)):        dict_row = defaultdict(int)        dict_col = defaultdict(int)        for j in range(len(board[0])):            value_row = board[i][j]            value_col = board[j][i]            if not value_row or value_col == 0:                return False            if value_row in dict_row:                return False            else:                dict_row[value_row] += 1.

(10) Question 2.2 NOTE: Pointers must be used to solve the following problem. You will 8 marks if pointers are not used, even if the solution is correct. Write a function createPassword() with no return value to randomly select 8 capital letters from the alphabet. The function receives the address of the first characters of the password string as parameter. Hint: Declare a characters string that contains all the capital letters of the alphabet and use the index values of the characters in the string for random selection of characters, e.g. 5 char alpha [27] = “ABCDEFGHIJKLMNOPQRSTUVWXYZ”; char *pAlpha = alpha;

State whether the following are true or false. If the answer is false, explain why.b) Pointers of different types may not be assigned to one another without a cast operation.

dissolve in c ++. Below, write the code of the program that calls the desired functions in the main function and performs the desired operations. a) random (random number range should be set to be in the range of 5-15) 10 an integer with an element produces numbers and transfers them to an array called array A and displays them enter a function that prints. b) then this sequence takes the arithmetic mean of the elements of the sequence A, round the found average value to the nearest large integer and return it to variable A. enter a function that assigns and prints the variable A on the screen. c) Then write a function that finds the factorial of the variable A value and assigns it to factorial A and prints it on the screen

Exercise 2. (Pascal's Triangle) Pascal's triangle Pn is a triangular array with n+1 rows, each listing the coefficients of the binomial expansion (x+ y)', where 0 _ "/workspace/project3 рython3 pавса1.ру 10 1 1 1 1 2 1 1 33 1 1 4 6 4 1 1 5 10 10 5 1 16 15 20 15 6 1 1 7 21 35 35 21 7 1 1 8 28 56 70 56 28 8 1 1 9 36 84 126 126 84 36 9 1 1 10 45 120 210 252 210 120 45 10 1 В равса1.ру import stdarray import stdio іпрort вys # Accept n (int) as command -line argument. ... # Setup a 2D ragged list a of integers. The list must have n + 1 rovs, vith the ith (0 <= i # <= n) row a[i] having i + 1 elements , each initialized to 1. For example, if n = 3, a should be # initialized to [[1], [1, 1], [1, 1, 1], [1, 1, 1, 1]]. a =... for i in range (...): ... # Fill the ragged list a using the formula for Pascal's triangle 1] [j - 1) + a[i - 1] [j] a [i][j] = a[i - 1] [j - 1] + a[i - 1] [j] #3 # vhere o <- i <- n and 1 <= j < i. for i in range (...): for j in range (...): ... # Write a to standard…

c) Using pointer notation, write a function in C which copies the contents of one char array, s2 to another char array, sl. The function prototype is given below. void copy(char s1, const char *s2);

State whether the following are true or false. If the answer is false, explain why.a) A pointer that’s declared to be void can be dereferenced.

(Check test scores) The answers to a true-false test are as follows: T T F F T. Given a two-dimensional answer array, in which each row corresponds to the answers provided on one test, write a function that accepts the two-dimensional array and number of tests as parameters and returns a one-dimensional array containing the grades for each test. (Each question is worth 5 points so that the maximum possible grade is 25.) Test your function with the following data: int score = 0;

State whether the following are true or false. If false, explain why. a) Two pointers that point to different arrays cannot be compared meaningfully.