Question 6For a list of length n, thesort makes exactly (n (n - 1))/2 key comparisons and 3 (n - 1) item assigmments.Question 7Which of the following correctly declares and initializes alpha to be an array of four rows and three columns with the component type int?int alpha [4 [3] = {{0,1,2} {1,2,3) {2,3,4} {3,4, 5}};int alpha [4 [3] = {0,1,2; 1,2,3; 2,3,4; 3,4,5};int alpha [4 [3] = {0,1,2: 1,2,3: 2,3,4: 3,4,5};O int alpha [4] [3] = {{0,1,2}, {1,2,3), (2,3,4}, {3,4,5}};

The assignment contains two questions, where: Question #6: is related to the sorting algorithm Question #7: is related to initialising multi dimensional arrayIn list of length, selection sort makes exactly (n(n-1))/2 key comparisons and 3(n-1) item assignments. Description: A selection sort algorithm is used to sort the list of items where the item index starts from index 0 to n-1.It works as below: Step 1: The loop is executed from index 0 to index n-1 Step 2: Set start at minLocation = startIndex Step 3: Sequentially loop over the list from next element and find smallest element. Step 4: If the value at the current index of the list is less than the value at current minLocation of the list, assign minLocation element with current index of loop and swap it at the end of current loop. Step 5: Increment start index with 1 and repeat steps from 3 to 5 till the list is completely sorted. Thus the above loop is executed as: n + (n-1) + (n-2) + ....+2+1 times = (n(n-1) )/2. Which states that selection sort has number of comparisons given in statement. The outer loop is executed n-1 times and each outer loop has 3 assignments, thus it has total 3(n-1) assignments. Array of 4 rows and 3 columns will have data type as : int alpha[4][3] = {{row1 values}, {row2 values}, {row 3 values}, {row 4 values}}; where each row values are separated with , and enclosed in { }. Outer array will be enclosed between { }. e.g.: int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}}; Let's consider the given options: int alpha[4][3] = {{0,1,2} {1,2,3} {2,3,4} {3,4,5}};: As there is no comma to separate the rows, this is incorrect statement. int alpha[4][3] = {0,1,2 ; 1,2,3; 2,3,4 ; 3,4,5};: As the rows are not enclosed between the { and } and also are separated by ; instead of , . it is incorrect option. int alpha[4][3] = {0,1,2 : 1,2,3: 2,3,4 : 3,4,5}; As the rows are not enclosed between the { and } and also are separated by : instead of , . it is incorrect option. int alpha[4][3] = {{0,1,2}, {1,2,3}, {2,3,4}, {3,4,5}}; As the rows are enclosed in { } and elements are separated by , this is correct initialisation of array alpha with 4 rows and 3 columns.From above description it can be concluded that: Question #6: has answer selection sort Question #7: has last option as correct option