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Articles by sudhir sharma
Page 57 of 98
Print all sequences of given length in C++
In this problem, we are given two integer values, k, and n. And we have to print all the sequences of length k from numbers from 1 to n in sorted order.Let’s take an example to understand the topic −Input:k = 2 ; n = 3 Output: 1 1 1 2 1 3 2 1 2 2 2 3 3 1 3 2 3 3So in this problem, we have to print the sequence as stated above.A simple way to solve this problem is by incrementing integers of the sequence till they get to the max value i.e. n. The ...
Read MorePrint consecutive characters together in a line in C++
In this problem, we are given a string of characters and we have to print the same string in such a way that if two or more characters are consecutive then print them together in a single line otherwise print them in different lines i.e. with a line break.Let’s take an example to understand the concept better, Input : abcxstk Output : abc x st kExplanation − Since abc are in a sequence they are printed in a line. Then comes x which is not in sequence, so we add a linebreak here. Next is s which is not a ...
Read MorePrint all Semi-Prime Numbers less than or equal to N in C++
In this problem, we are given an integer N. and we have to print all the semiprime numbers that are less than or equal to N.Before solving this problem, let’s understand what is a semi-prime number.A semi-prime number is a number whose value is the product of two distinct prime numbers.Let’s take an example, 21 = 3*7 is a semiprime number.25 = 5*5 is not a semiprime number.Now, let’s take an example of semiprime numbers less than or equal to n.Input: N = 15 Output: 6 10 14 15To solve this problem, we have to take each number less than ...
Read MorePrint concentric rectangular pattern in a 2d matrix in C++
In this problem, we have to print a rectangular pattern in a 2D matrix in such a way that they are concentric to each other.Let’s take an example to understand this problem better, For n=4 is : 4 4 4 4 4 4 4 4 3 3 3 3 3 4 4 3 2 2 2 3 4 4 3 2 1 2 3 4 4 3 2 2 2 3 4 4 3 3 3 3 3 4 4 4 4 4 4 4 4Here, we have to print the pattern as ...
Read MorePrint Concatenation of Zig-Zag String in n Rows in C++
In this problem, we are given a string that is a sequence of characters. And we are given the length of the zig-zag pattern and we have to print the concatenation string of this zig-zag string in n rows.Let’s see a few examples to understand the concept better, EXAMPLEInput : string = ‘STUVWXYZ’ n = 2. Output : SUWYTVXZExplanation − the zig-zag pattern for the string for a 2-row pattern is −S U W Y T V X ZThe concatenation of this zig-zag pattern is - SUWYTVXZ.ExampleInput : string = ABCDEFGH n = ...
Read MorePrint all safe primes below N in C++
In this problem, we are given an integer N and we have to print all safe prime number whose values are less than N.A safe prime number is a prime number which can be represented as [(2*p)- 1] where p is also a prime number.Examples − 5[(2*2) +1] , 7[(2*3)+1].Let’s take a few examples to understand the problem better −Input: N = 12 Output: 5 7 11.To solve this problem, we will find all the prime numbers less than N(for this we will use Sieve of Eratosthenes). And check if the prime number is a safe prime number or not ...
Read MorePrint common characters of two Strings in alphabetical order in C++
In this programming problem, we are given two strings. And we have to find all the characters of the string that are common in both the string and we have to print these common characters in alphabetical order. And print ‘NO COMMON CHARACTERS ’ found if no common letters arise. Given that the string does not contain all lower case alphabets.Let’s take an example −Input : string1 : adsfhslf string2 : fsrakf Output : affsExplanation − Between the two strings there are a, f, s. Hence the lexicographical output is ‘afs’.Input : string1 : abcde string2 : glhyte ...
Read MorePrint all root to leaf paths with there relative positions in C++
In this problem, we are given a binary tree. And we have to print all the paths from the root to the leaf of the tree. Also, add underscore “_” to show the relative positions of the nodes.Let’s take an example to understand the topic better −Input −Output −_ _ 3 _ 9 1 _3 9 _7 3 _ 4 _ _ 2 3 9 4 1 7 6 2 3 _ 4 6To solve this problem, we will use the concept of the vertical order of the elements of the tree.Based on this, we will print the path from ...
Read MorePrint all Proth primes up to N in C++
In this problem, we are given an integer N and we have to print all proth prime numbers less than or equal to N.Proth Prime NumberA proth prime number is a positive integer whose value can be represented as n = k* 2n + 1. where k is an odd positive integer and n is a positive integer and both satisfy the 2n > k.Examples − 3, 5, 13…..Let’s take an example to understand the topic better −Input: N = 23 Output: 3, 5, 13, 17.For this, we will find all the prime numbers less than N(for this we will ...
Read MorePrint characters having odd frequencies in order of occurrence in C++
In this problem, we are given string str by the user. And we have to print only those characters whose frequencies of occurrence in an odd number.To solve this problem, we have to find the total frequency of occurrence of a character in a string. And print only those characters of the string that have odd frequencies of occurrence.Let’s take an example to understand the topic better −Input : adatesaas. Output : dteExplanation −The characters with their frequency of occurrence are −a4d1t1e1s2Characters with odd frequency are d, t, e.AlgorithmNow let's try to create an algorithm to solve this problem −Step ...
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