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Articles by Dev Prakash Sharma
Page 42 of 42
Write a program in Java to find the missing positive number in a given array of unsorted integers
Let’s suppose we have given an array of unsorted integers. The task is to find the positive missing number which is not present in the given array in the range [0 to n]. For example, Input-1 −N = 9 arr = [0, 2, 5, 9, 1, 7, 4, 3, 6]Output −8Explanation − In the given unsorted array, ‘8’ is the only positive integer that is missing, thus the output is ‘8’.Input-2 −N = 1 arr = [0]Output −1Explanation − In the given array, ‘1’ is the only one positive integer which is missing, thus the output is ‘1’.Approach to solve ...
Read MoreFind the index of the first unique character in a given string using C++
Given a string ‘s’, the task is to find the first unique character which is not repeating in the given string of characters and return its index as output. If there are no such characters present in the given string, we will return ‘-1’ as output. For example, Input-1 −s = “tutorialspoint”Output −1Explanation − In the given string “tutorialspoint”, the first unique character which is not repeating is ‘u’ which is having the index ‘1’. Thus we will return ‘1’ as output.Input-2 −s = “aaasttarrs”Output −-1Explanation − In the given string “aaasttarrs’, there are no unique characters. So, we will ...
Read MoreDetect Capital in a given string using C++
Let's suppose we have a string ‘str’ which consists of some character in it. The task is to check whether the given string has all its characters capitalized or not and return True or False respectively. For example, Input-1 −str = “INDIA”Output −TrueExplanation − Since all the character of the input string is capital, we will return true in this case.Input-2 −str = “Programmer”Output −FalseExplanation − Since all the characters of the input string are not in the capital except the first letter, we will return false in this case.The approach used to solve this problemIn the given string, we ...
Read MoreC++ Program to Delete the First Node in a given Singly Linked List
A linked list is a linear data structure that has multiple nodes that are connected with each other. Each node consists of two fields – Data Field and the address of the next node.Let us assume we have a singly linked list and we need to delete the first node from this linked list. For example, Input 1 − 4 → 3 → 2 → 1Output − 3 → 2 → 1 →Explanation − ‘4’ is the first node in the given singly linked list. After deleting the first node, the linked list will be 3→2→1.Input 2 − 1 → ...
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