In C, ++ and -- operators are called increment and decrement operators. They are unary operators needing only one operand. Hence ++ as well as -- operator can appear before or after the operand with same effect. That means both i++ and ++i will be equivalent.i=5; i++; printf("%d", i);and i=5 ++i; printf("%d", ... Read More

In this article, we will show you how to find the largest integer less than x in python. The Greatest Integer Function [X] denotes an integral part of the real number x that is the closest and smallest integer to x. It's also called the X-floor. [x]=the largest integer less ... Read More

The random module in the Python standard library provides a shuffle() function that returns a sequence with its elements randomly placed.>>> import random >>> l1=['aa',22,'ff',15,90,5.55] >>> random.shuffle(l1) >>> l1 [22, 15, 90, 5.55, 'ff', 'aa'] >>> random.shuffle(l1) >>> l1 ['aa', 'ff', 90, 22, 5.55, 15]

This can be corrected by putting n+1 in brackets i.e. (n+1)for num in range(5):     print ("%d" % (num+1))Using %d casts the object following % to string. Since a string object can't be concatnated with a number (1 in this case) interpreter displays typeerror.

Principle used in following solution to this problem is to divide given number with all from 3 its square root, a number's square root is largest possible factor beyond which it is not necessary to check if it is divisible by any other number to decide that it is prime ... Read More

Python has an in-built function isdigit() which returns true if all characters in a string are digit (between 0-9)>>> string='9764135408' >>> string.isdigit() True >>> string='091-9764135408' >>> string.isdigit() FalseYou can also use regex expression to check if string contains digits only.>>> import re >>> bool(re.match('^[0-9]+$', '9764135408')) True >>> bool(re.match('^[0-9]+$', '091-9764135408')) FalseRead More

Python dictionary is collection of key value pairs. Value associated with a certain key is returned by get() method.>>> D1={'a':11,'b':22,'c':33} >>> D1.get('b') 22You can also obtain value by using key inside square brackets.>>> D1['c'] 33

The keys() method of Python dictionary class returns a view object consisting of keys used in the dictionary.>>> d1 = {'name': 'Ravi', 'age': 21, 'marks': 60, 'course': 'Computer Engg'} >>>d1.keys() dict_keys(['name', 'age', 'marks', 'course'])It can be stored as a list object. If new key-value pair is added, the view object ... Read More

If sum of cubes of individual digits in a number add up to the number itself, it is called armstrong number. for example 153=1**3+5**3+3**3ExampleFollowing Python program find armstrong numbers between 100 to 1000for num in range(100, 1000):   temp=num   sum=0   while temp>0:       digit=temp%10     ... Read More

We can write a recursive function in Python to find the factorial of a number. Recursion means that a function calls itself repeatedly to work through different stages of the same task. This technique is useful for tasks that follow a repetitive pattern or have a step-by-step structure, like calculating ... Read More