Python Articles - Page 403 of 1048

Let's understand the problem statement: we need to convert a given strings to a title case, which involves capitalizing the first letter of each word while converting the remaining letters to lowercase. The following are the various ways to capitalize each word's first letter in a string - Using title() method Using capitalize() method Using upper() method Importing string module Importing regex module Capitalizing a String in a File Using the title() method to ... Read More

Suppose we have a number n. We have to create alphabet rangoli of n x n size. n must be within 1 and 26 and it will start from a and end at z when n is 26.So, if the input is like 5, then the output will be--------e-------- ------e-d-e------ ----e-d-c-d-e---- --e-d-c-b-c-d-e-- e-d-c-b-a-b-c-d-e --e-d-c-b-c-d-e-- ----e-d-c-d-e---- ------e-d-e------ --------e--------To solve this, we will follow these steps −for i in range n-1 to 0, decrease by 1, dofor j in range 0 to i-1, doprint "--"for j in range n-1 to i+1, decrease by 1, doprint character whose ASCII is j+97 and print ... Read More

Suppose we have a value n. We have to print Decimal, Octal, Hexadecimal and Binary equivalent of first n numbers (1 to n) in four different columns. As we know, we can express the numbers with prefix characters d, o, X and b for decimal, octal, hexadecimal and decimal respectively.So, if the input is like n = 10, then the output will be1    1    1    1 2    2    2   10 3    3    3   11 4    4    4  100 5    5    5  101 6    6    6 ... Read More

Suppose we have two numbers n and m, m will be multiple of n. We have to draw a door mat pattern with a word say "WELCOME" in the middle. The mat size will be n x m. We have to make this mat using dots(.), hyphens (-), pipe symbols (|) and the text at middle.So, if the input is like n = 5 m = 15, then the output will be------.|.------ ---.|..|..|.--- ----WELCOME---- ---.|..|..|.--- ------.|.------To solve this, we will follow these steps −for i in range 1 to n-1, increase by 2, doprint(integer of ((m-i*3)/2) number of '-', then ... Read More

Suppose we have a string s and width w. We have to wrap this text into a paragraph with width w. This can be done very easily with fill() function present inside textwrap library. So we have to import textwrap library first.So, if the input is like s = "The quick brown fox jumps over the lazy dog" w = 9, then the output will beThe quickbrown foxjumpsover thelazy dogTo solve this, we will follow these steps −take the string into stake width into wcall textwrap.fill(s, w) by passing s as the first argument, and w as the second argumentExampleLet ... Read More

Suppose we have a number n. We have to draw a diamond pattern with asterisks with 2n-1 lines. First 1 to n lines contain 1 to n number of asterisks, and next they are decreasing from n-1 to 1.So, if the input is like n = 5, then the output will be    *    * *   * * *  * * * * * * * * *  * * * * * * * * * *To solve this, we will follow these steps −for i in range ... Read More

Suppose we have a string s. We have to check whether the string contains the following or not.NumbersLowercase lettersUppercase lettersNote − There may be some other symbols, but these three must be thereSo, if the input is like s = "p25KDs", then the output will be TrueTo solve this, we will follow these steps −arr := an array of size 3 and fill with Falsefor each character c in s, doif c is alphanumeric, thenarr[0] := Trueif c is in lowercase, thenarr[1] := Trueif c is in uppercase, thenarr[2] := Truereturn true when all items of arr are trueExampleLet us ... Read More

Suppose we have a string s and a substring t. We have to count how many times t occurs in s.So, if the input is like s = "abaabcaabababaab", t = "aab", then the output will be 3 because the substrings are ab(aab)c(aab)abab(aab).To solve this, we will follow these steps −cnt := 0for i in range 0 to (size of s - size of t), doif substring of s[from index i to i + size of t - 1] is same as t, thencnt := cnt + 1return cntExampleLet us see the following implementation to get better understandingdef solve(s, t): ... Read More

Suppose we have two values k and n. Consider a random permutation say p1, p2, ..., pn of first n natural numbers numbers 1, 2, ..., n and calculate the value F, such that F = (X2+...+Xn-1)k, where Xi is an indicator random variable, which is 1 when one of the following two conditions holds: pi-1 < pi > pi+1 or pi-1 > pi < pi+1 and Xi is 0 otherwise. We have to find the expected value of F.So, if the input is like k = 1 n = 1000, then the output will be 1996/3To solve this, we ... Read More

Suppose we have a string s, an index i and a character c. We have to replace the ith character of s using c. Now in Python, strings are immutable in nature. We cannot write a statement like s[i] = c, it will raise an error [TypeError: 'str' object does not support item assignment]So, if the input is like s = "python", i = 3, c = 'P', then the output will be "pytPon"To solve this, we will follow these steps −left := s[from index 0 to i]right := s[from index i+1 to end]return left concatenate c concatenate rightExampleLet us ... Read More