When it is required to test if all elements are unique in columns of a matrix, a simple iteration and a list comprehension along with the ‘set’ operator are used.Below is a demonstration of the same −Example Live Demomy_list = [[11, 24, 84], [24, 55, 11], [7, 11, 9]] print("The list is :") print(my_list) my_result = True for index in range(len(my_list[0])):    column = [ele[index] for ele in my_list]    if len(list(set(column ))) != len(column ):       my_result = False       break if(my_result == True):    print("All columns are unique") else: ... Read More

When it is required to remove characters, which are greater than ‘K’, a simple iteration is used along with the ‘ord’ (Unicode representation) method.Below is a demonstration of the same −Example Live Demomy_list = ["python", "is", "easy", "to", "learn"] print("The list is :") print(my_list) K = 9 print("The value of K is ") print(K) my_result = [] for element in my_list:    result_string = ''    for sub in element:       if (ord(sub) - 97

When it is required to check if any list element is present in a tuple or not, a Boolean value and a simple iteration are used.Below is a demonstration of the same −Example Live Demomy_tuple = (14, 35, 27, 99, 23, 89, 11) print("The tuple is :") print(my_tuple) my_list = [16, 27, 88, 99] print("The list is :") print(my_list) my_result = False for element in my_list:    if element in my_tuple :       my_result = True       break print("The result is :") if(my_result == True): print("The element is present in the ... Read More

When it is required to sort rows of a matrix by custom element count, a method is defined that uses the list comprehension and ‘len’ method to find the output.Below is a demonstration of the same −Example Live Demodef get_count_matrix(my_key):    return len([element for element in my_key if element in custom_list]) my_list = [[31, 5, 22, 7], [85, 5], [9, 11, 22], [7, 48]] print("The list is :") print(my_list) custom_list = [31, 85, 7] my_list.sort(key=get_count_matrix) print("The resultant list is :") print(my_list)OutputThe list is : [[31, 5, 22, 7], [85, 5], [9, 11, 22], [7, 48]] The ... Read More

When it is required to filter rows with a specific pair sum, a method is defined. It checks to see if elements in a specific index is equal to key, and returns output based on this.Below is a demonstration of the same −Example Live Demodef find_sum_pair(val, key):    for index in range(len(val)):       for ix in range(index + 1, len(val)):          if val[index] + val[ix] == key:             return True    return False my_list = [[71, 5, 21, 6], [34, 21, 2, 71], [21, 2, 34, 5], [6, 9, ... Read More

In C programming language, generally, the special symbols have some special meaning. This language provides low-level access to the memory and it is identified for its performance and efficiency. The C language includes a character set of English alphabets(a-z, A-Z), digits(0-9), and specific meaning with special characters. Some special characters are operators, while combinations like "" are escape sequence. In C symbols are used to perform special operations. Some of the special symbols that are used in C programming are as follows − [] () {}, ; * = # Common Characters in C Programming Let’s understand their definitions, which ... Read More

Binary numbers are represented in 1’s and 0’s. It can also be referred to as a rational number with a finite representation in the system. This is a quotient of an integer by a power of two. Hexadecimal number system with 16 digits is {0, 1, 2, 3…..9, A(10), B(11), ……F(15)}. In base 16 transfer encoding, each byte of plain text is divided into two 4-bit values, which are represented by two hexadecimal digits. Converting Binary to Hex using C To convert from binary to hexadecimal representation, the bit string is grouped into 4-bit blocks, called nibbles, starting from the ... Read More

Datatype is the declaration of memory location or variable. Data can be of different types and some of the examples of data types in C language are as follows −Integers, rational numbers, whole numbers, real numbers, complex numbers, vectors, characters etc.Coming to the machine hardware, the data is everything encoded as a string of binary digits 0 and 1 of finite length. In the machines, the integer data is processed in the arithmetic logic unit (ALU) and fractional data is processed in the floating-point unit (FPU). This gets reflected in the built-in or primitive data types of a high-level language.Built-in ... Read More

Computer is an electronic device which can used to store data and to perform operations, based on the size of computer, the computer may be divided into four types they are −Micro-computer (small)Mini-computer (medium)Mainframe computer (large)Supercomputer (very large)Micro-computerThe CPU used in micro-computer is microprocessor, it originated in the late 1970’s. The first micro-computer is around 8-bit microprocessor chips.The chip with 8-bit can retrieve data/instruction from storage, process and manipulate at a time. The cost of micro-computers is economical and are friendly in use. Personal com­puters (PCs) can fall into this category.Mini-computerIt originated in the 1960’s. Initially the mini-computers were 8 ... Read More

Linked lists use dynamic memory allocation and are collection of nodes.Nodes have two parts which are data and link.Types of Linked ListsThe types of linked lists in C programming language are as follows −Single / Singly linked lists.Double / Doubly linked lists.Circular single linked list.Circular double linked list.Double linked listThe diagram given below depicts the representation of double linked list.ExampleFollowing is the C program to insert a node at any position using double linked list − Live Demo#include #include struct node {    int num;    struct node * preptr;    struct node * nextptr; }*stnode, *ennode; void DlListcreation(int ... Read More