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Programming Articles
Page 2417 of 2547
Find the length of each string element in the Numpy array in C++
Here we will see how to get the length of each string element in the Numpy Array. Numpy is a library for Numeric Python, and it has very powerful array class. Using this we can store data in an array like structure. To get the length we can follow two different approach, these are like below −Exampleimport numpy as np str_arr = np.array(['Hello', 'Computer', 'Mobile', 'Language', 'Programming', 'Python']) print('The array is like: ', str_arr) len_check = np.vectorize(len) len_arr = len_check(str_arr) print('Respective lengts: ', len_arr)OutputThe array is like: ['Hello' 'Computer' 'Mobile' 'Language' 'Programming' 'Python'] Respective lengts: [ 5 8 6 8 ...
Read MoreFind sum of factorials in an array in C++
Consider we have an array A, which is sorted. It has all elements appears twice, but one element is present for only one time. We have to find that element. If the array is [1, 1, 3, 3, 4, 4, 5, 6, 6, 7, 7, 9, 9], so the single element is 5.We will use the binary search approach to solve this. All elements before the single element has their first occurrence at index 0, 2, 4, … and first occurrence at index 1, 3, 5, … but after the single element, all occurrences of the first number will be ...
Read MoreFind largest word in dictionary by deleting some characters of given string in C++
Consider we have a dictionary, and a string s. Find the longest string in the dictionary, that can be formed by deleting some characters of the string s. Suppose the s is “apbreoigroakml”, The dictionary has {“prog”, “ram”, “program”}, then the result will be “program”.To solve this, we will traverse all dictionary words, and for each word, we will check whether the subsequence of the given string and is longest of all such words. Finally return longest word with given string as subsequence.Example#include #include using namespace std; bool isSubSequence(string s1, string s2) { int m = s1.length(), n = ...
Read MoreFind N digits number which is divisible by D in C++
Suppose we have two numbers N and D. We have to find N digit number, that is divisible by D. If N is 3, and D is 5, then the number can be 500. This can be solved easily. If D is 10 and N is 1, then it will be impossible. We can put D, and suppose the D has m number of digits, then attach N – m number of 0s to make it N digit number and divisible by D.Example#include using namespace std; string nDigitDivByD(int n, int d) { string ans = ""; if (d ...
Read MoreFind most significant set bit of a number in C++
Here we will see if a number is given, then how to find the value of Most Significant Bit value, that is set. The value is power of 2. So if the number is 10, MSB value will be 8.We have to find the position of MSB, then find the value of the number with a set-bit at kth position.Example#include #include using namespace std; int msbBitValue(int n) { int k = (int)(log2(n)); return (int)(pow(2, k)); } int main() { int n = 150; cout
Read MoreFind middle of singly linked list Recursively in C++
Consider we have a list of numbers; our task is to find the middle of the linked list using recursion. So if the list elements are [12, 14, 18, 36, 96, 25, 62], then the middle element is 36.To solve this problem, we will count total number of nodes in the list in recursive manner and do half of this. Then rolling back through recursion decrement n by 1 in each call, return element where n is zero.Example#include #include using namespace std; class Node{ public: int data; Node *next; }; Node* getNode(int data){ ...
Read MoreFind maximum element of each row in a matrix in C++
Consider we have a matrix, our task is to find the maximum element of each row of that matrix and print them. This task is simple. For each row, reset the max, and find the max element, and print it. Let us see the code for better understanding.Example#include #define MAX 10 using namespace std; void largestInEachRow(int mat[][MAX], int rows, int cols) { for (int i = 0; i < rows; i++) { int max_row_element = mat[i][0]; for (int j = 1; j < cols; j++) { if (mat[i][j] > max_row_element) max_row_element = mat[i][j]; } cout
Read MoreFind maximum element of each column in a matrix in C++
Consider we have a matrix, our task is to find the maximum element of each column of that matrix and print them. This task is simple. For each column, reset the max, and find the max element, and print it. Let us see the code for better understanding.Example#include #define MAX 10 using namespace std; void largestInEachCol(int mat[][MAX], int rows, int cols) { for (int i = 0; i < cols; i++) { int max_col_element = mat[0][i]; for (int j = 1; j < rows; j++) { if (mat[j][i] > max_col_element) max_col_element = mat[j][i]; } cout
Read MoreFind last element after deleting every second element in array of n integers in C++
Consider we have one circular array containing integers from 1 to n. Find the last element, that would remain in the list after deleting every second element starting from first element. If the input is 5, then array will be [1, 2, 3, 4, 5]. Start from 1. After deleting each second element will be like −1 0 3 4 5 1 0 3 0 5 0 0 3 0 5 0 0 3 0 0So the element that remains in the list is 3.We will solve this problem using recursion. Suppose n is even. The numbers 2, 4, 6 ...
Read MoreFind largest element from array without using conditional operator in C++
Suppose we have an array A with some elements. We have to find the largest element in the array A, but the constraint is, we cannot use any conditional operator. So if A = [12, 63, 32, 24, 78, 56, 20], then maximum element will be 78.To solve this problem, we will use the bitwise AND operation. at first we will insert one extra element INT_MAX (where all bit is 1) in array. Then we will try to find maximum AND value of any pair from the array. This obtained max value will contain AND value of INT_MAX and largest ...
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