Double pointers: Describe how this operation can be done in O(1) time if there are pointers in each node to both the previous and the next node.
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Double pointers: Describe how this operation can be done in O(1) time if there are pointers in each node to both the previous and the next node.
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- HOME WORK 1-Write a steps to search for a node contain a given value in a S.L.L.L. its head is given by pointer variable ( First ) 2-Write Recursive function to count number of nodes in a given S.L.L.L. 3-Write a steps to count number of nodes contain odd number in a given S.L.L.L. its head is given by pointer variable ( First ). 4-Write a steps to test values stored in S.L.L.L. if it is in ascending order or not .Q#1: The algorithm Enqueue may fails even though there is memory space available. One way to avoid this problem is to rewrite the algorithm Enqueue and Dequeue. Suggestion 1: Rewrite the program Enqueue in C++ using Arrays Whenever the rare pointer gets to the end of the queue, test whether the pointer FRONT is at location 1 or not; if not, shift all the elements so that they are wrapped from the beginning and thus make room for new item. Suggestion 2: Rewrite the program Dequeue in C++ using Arrays After the end of each deletion, all the elements at the trail and shifted once towards the front; here the idea is to fix the FRONT pointer always at 1. The queue which follows such operations is termed as dynamic queue. Rewrite operations ENQUEUE and DEQUEUE for a dynamic queue.swap_nums seems to work, but not swap_pointers. Fix it. #include <stdio.h>void swap_nums(int *x, int *y) { int tmp; tmp = *x; *x = *y; *y = tmp; } void swap_pointers(char *x, char *y) { char *tmp; tmp = x; x = y; y = tmp; } int main() { int a,b; char *s1,*s2; a = 3; b=4; swap_nums(&a,&b); printf("a is %d\n", a); printf("b is %d\n", b); s1 = "I should print second"; s2 = "I should print first"; swap_pointers(s1,s2); printf("s1 is %s\n", s1); printf("s2 is %s\n", s2); return 0; }
- question 1 Write a program to evaluate a postfix expression. Input: a postfix expression. E.g. 3 5 + Output: the result of the expression. E.g. the result for the above input is 8. Note: You must use the stack to implement this task. And please give the stack solutions for both the following implementations: Implement the array-based stack Implement the pointer-based stack Test your program using the following expressions: 3 5 + 3 5 + 6 * 3 5 6 + * 3 5 6 * 8 - 2 / + 12 20 + 16 / do not copy from chegg and do in c++What is a way to safely dereference a pointer?CS Principles Unit 6 Assessment (page 3 of 3) 11. A group of students writes their names and unique student ID numbers on sheets of paper. The sheets are then randomly placed in a stack. Their teacher is looking to see if a specific ID number is included in the stack. Which of the following best describes whether their teacher should use a linear or a binary search? A. The teacher could use either type of search though the linear search is likely to be faster B. The teacher could use either type of search though the binary search is likely to be faster C. Neither type of search will work since the data is numeric D. Only the linear search will work since the data has not been sorted 0000
- A dequeue is a list from which elements can be inserted or deleted at either end a. Develop an array based implementation for dequeue. b. Develop a pointer based implementation dequeue.IN C PROGRAMMING LANGUAGE: Please write a pointer version of squeeze() named psqueeze(char *s, char c) which removes c from the string s.1- the following expression shows a recurrent relation. Write a recursive method in Java to compute the nth term An based on the definition. What will be the output for the term A5 ? An = 2n + An-1 Where n is integer such that n ≥ 0, and the base case A-1 = 5 2-for the array given below, trace the binary search algorithm to find target 43. Provide all steps to show how 43 will be searched. (Type your answer in the box) 12 22 32 40 43 59 66 70
- struct node{int num;node *next, *before;};start 18 27 36 45 54 63 The above-linked list is made of nodes of the type struct ex. Your task is now to Write a complete function code to a. Find the sum of all the values of the node in the linked list. b. Print the values in the linked list in reverse order. Use a temporary pointer temp for a and b. i dont need a full code just the list partc programming language The program below uses pointer arithmetic to determine the size of a 'char'variable. By using pointer arithmetic we can find out the value of 'cp' and thevalue of 'cp+1'. Since cp is a pointer, this addition involves pointer arithmetic:adding one to a pointer makes the pointer point to the next element of the sametype.For a pointer to a char, adding 1 really just means adding 1 to the address, butthis is only because each char is 1 byte.1. Compile and run the program and see what it does.2. Write some code that does pointer arithmetic with a pointer to an int anddetermine how big an int is.3. Same idea – figure out how big a double is, by using pointer arithmetic andprinting out the value of the pointer before and after adding 1.4. What should happen if you added 2 to the pointers from exercises 1through 3, instead of 1? Use your program to verify your answer.#include <stdio.h>int main( ){ char c = 'Z'; char *cp = &c; printf("cp is %p\n", cp);…You have a sorted linked list. Fill in the missing code in the following function. SortedType::DeleteItem(Item Type item) // pointer delete //trailing pointer // traveling pointer void { NodePtr tempPtr; NodePtr predLoc; NodePtr location: bool found false; // Find item to delete: Put your code below //delete item: Put your code below