Yahoo Web Search

Search results

1. Top results related to sort an array in c++

   • Sort an array based on members of another array in C++

     Top Answer

     Answered May 14, 2012 · 8 votes

     Instead of sorting integers of array1, sort their indexes using array2[index] to compare items, and then re-arrange array1 in accordance with the permutation that you get back from the sort.

     Here is a quick demo:

     #include <stdio.h>#include <stdlib.h>int array1[] = {1, 7, 3, 9, 5};double array2[] = {1.1, 7.7, 3.3, 9.9, 5.5};int compare (const void * a, const void * b) { double diff = array2[*(int*)a] - array2[*(int*)b]; return (0 < diff) - (diff < 0);}int main(void) { int perm[5], i; int res[5]; for (i = 0 ; i != 5 ; i++) { perm[i] = i; } qsort (perm, 5, sizeof(int), compare); for (i = 0 ; i != 5 ; i++) { res[i] = array1[perm[i]]; } for (i = 0 ; i != 5 ; i++) { printf("%d\n", res[i]); } return 0;}

     Check all answers on Stack Overflow

     1/5

   • sort an array of floats in c++

     Top Answer

     Answered Aug 28, 2013 · 23 votes

     Use std::sort

     with a non-default comparator:

     float data[SIZE];data[0] = ...;...-std::sort(data, data + size, std::greater<float>());

     Check all answers on Stack Overflow

     2/5

   • Sort an array by using function in C++

     Top Answer

     Answered Dec 19, 2022 · 1 votes

     You don't need to return anything. The array is being passed into the function via an int* pointer, so the code is directly manipulating the elements of the caller's array.

     Also, your 2nd for loop is incrementing i when it should be incrementing j instead.

     How is the caller's array declared, exactly? The loops inside your function require the sort parameter to point at an int[] array with at least 5 elements. However, the function's declaration does not convey or enforce that requirement, so the caller is free to pass in however many elements it wants, and if that size is fewer than 5 then your code will have undefined behavior. You should at least have the caller pass in the actual number of elements as another parameter, eg:

     void sort_func(int sort[], int size) { int swap = 0; for (int i = 0; i < size; i++) { for (int j = 0; j < (size-1); j++) { if (sort[j] > sort[j + 1]) { swap = sort[j]; sort[j] = sort[j + 1]; sort[j + 1] = swap; } } }}

     int arr[5];...sort_func(arr, 5);

     Otherwise, if you strictly require 5 elements, then enforce that by taking a pointer to an array with exactly 5 elements, eg:

     void sort_func(int (*sort)[5]) { int swap = 0; for (int i = 0; i < 5; i++) { for (int j = 0; j < 4; j++) { if ((*sort)[j] > (*sort)[j + 1]) { swap = (*sort)[j]; (*sort)[j] = (*sort)[j + 1]; (*sort)[j + 1] = swap; } } }}

     int arr[5];...sort_func(&arr);

     Or, use a reference instead of a pointer, eg:

     void sort_func(int (&sort)[5]) { int swap = 0; for (int i = 0; i < 5; i++) { for (int j = 0; j < 4; j++) { if (sort[j] > sort[j + 1]) { swap = sort[j]; sort[j] = sort[j + 1]; sort[j + 1] = swap; } } }}

     int arr[5];...sort_func(arr);

     Check all answers on Stack Overflow

     3/5

   • Sort an Array Given an array of integers nums, sort the array in ascending order. Input: nums = [5,2,3,1] Output: [1,2,3,5] Inp nums = [5,1,1,2,0,0]

     Top Answer

     Answered Dec 03, 2021 · 0 votes

     You have many problems in your code.

     1st, it does not compile. It contains invalid C++ code. VLAs (Variabale length arrays) are not a part of the C++ language. So, your line int ans[nums.size()]; will not compile with a C++ compliant compiler.

     2nd, and this is the root course of your crash, you do not have end end conditions for your recursion. In the 3rd line of your helper function, you call helper recursively and then again and again and again and again . . .

     Until you get a stackoverflow or out of memory and the above error.

     What you need to do is: Look in your algorithm book and try to understand mergesort. Then read it again and again and again. If you finally understood the algorithm (My guess is that it needs 10 days), then start coding. Not before. Otherwise you will definitely and always fail.

     Try it.

     Check all answers on Stack Overflow

     4/5

   • Also try

     sort an array in c++ descending	code to sort an array in c++
     function to sort an array in c++	how to sort an array in c++ without stl
     bubble sort an array in c++

     5/5

   Show moreShow less

2. www.geeksforgeeks.org · how-to-sort-an-array-in-cppHow to Sort an Array in C++? - GeeksforGeeks

   www.geeksforgeeks.org · how-to-sort-an-array-in-cpp

   

   Mar 18, 2024 · To sort an array in C++, we can simply use the std::sort () method provided by the STL, which takes two parameters, the first one points to the array where the sorting needs to begin, and the second parameter is the length up to which we want to sort the array.

3. Searches related to sort an array in c++

   sort an array in c++ descending	sort an array leetcode
   function to sort an array in c++	sort an array in python
   bubble sort an array in c++	sort an array javascript
   code to sort an array in c++	sort an array excel

4. stackoverflow.com · questions · 5897319sorting - How to use std::sort to sort an array in C++ ...

   stackoverflow.com · questions · 5897319

   

   Apr 10, 2013 · sort() can be applied on both array and vector in C++ to sort or re-arrange elements . 1. C++ sort() in case of a vector: // importing vector, algorithm & iostream. using namespace std; int main() {vector v = {5,4,3,2,8}; // depending on your vector size. sort(v.begin(), v.end()); cout<<v[1]; //testing the sorted element positions by printing ...

5. www.geeksforgeeks.org · sort-c-stlstd::sort() in C++ STL - GeeksforGeeks

   www.geeksforgeeks.org · sort-c-stl

   

   Sep 6, 2024 · std::sort() is an STL function that is used to sort the given range in desired order. It provides a simple and efficient way to sort the data in C++ but it only works on data structure which have random access to its elements such as vectors and arrays. It is defined inside <algorithm> header file. Syntax std::sort (first, last, comp); Parameters

6. thispointer.com · sort-an-array-in-ascending-orderSort an Array in Ascending Order in C++ (6 Ways) - thisPointer

   thispointer.com · sort-an-array-in-ascending-order

   

   • Problem Description
   • Sort An Array in C++ Using STL Function Sort
   • Sort An Array in C++ Using Bubble Sort Approach
   • Sort An Array in C++ Using Insertion Sort Approach
   • Sort An Array in C++ Using Selection Sort Approach
   • Sort An Array in C++ Using Merge Sort Approach
   • Sort An Array in C++ Using Quick Sort Approach
   • Summary
   • GeneratedCaptionsTabForHeroSec

   Here we are given an array which needs to be sorted in ascending order. Input Output There are different ways to do it in C++. Let’s see all the techniques one by one.

   See full list on thispointer.com

   The sort() function mainly accepts two arguments. First one is the starting address and second one is the last address of the array which need to be sorted. By default the sort() will sort the array in ascending order. Example Output Also, there are commonly used 5 algorithms that can be used for sorting an array in Ascending order.

   See full list on thispointer.com

   This is the simplest algorithm to sort an array in ascending order. In each step one element in the last of array is set in position. bubble_sort()is the function in which bubble sort is implimented. Time Complexity: O(n^2) Space Complexity: O(1) Example Output

   See full list on thispointer.com

   In this algorithm we will assume one subarray as sorted and go on adding elements to that array. Initially only single element of array is assumed to be sorted. insertion_sort()is the function in which insertion sort is implimented. Time Complexity: O(n^2) Space Complexity: O(1) Example Output

   See full list on thispointer.com

   In selection sort we will virtually divide the array into two parts viz sorted and unsorted. Sorted subarray will be in begining of array and we will select smallest element from the unsorted subarray and we will add it to sorted array. Time Complexity: O(n^2) Space Complexity: O(1) Example Output

   See full list on thispointer.com

   Merge Sort works on Divide and Conquer algorithm technique. This algorithm consists of two main functions generally named as merge_sort() and merge(). The merge_sort() function will continously divide the array into smaller and smaller parts. The merge() function will merge all the subarrays according to ascending order, finally constructing the ma...

   See full list on thispointer.com

   This algorithm follows divide and conquer approach for sorting an array. Firstly in this algorithm we need to decide the pivot for quick sort to perform. It consists of a quick_sort()function which is called recursively. Time Complexity: O(n^2) Space Complexity: O(log(n)) Example Output

   See full list on thispointer.com

   We have seen that how to sort array with help of STL function sort() and 5 different algorithms. Each algorithm has its own Time and Space complexity.

   See full list on thispointer.com

   Learn how to sort an array in ascending order in C++ using STL function sort () and five different algorithms: bubble sort, insertion sort, selection sort, merge sort and quick sort. See the code, input and output examples for each algorithm and compare their time and space complexity.

   See full list on thispointer.com

7. en.cppreference.com · w · cppstd::sort - cppreference.com

   en.cppreference.com · w · cpp

   

   Apr 1, 2024 · Learn how to use std::sort function to sort an array in C++. See the syntax, parameters, requirements, complexity, examples and defect reports of std::sort.

8. cplusplus.com · articles · NhA0RXSzBeginners guide to the std::sort() function - C++ Users

   cplusplus.com · articles · NhA0RXSz

   

   May 6, 2013 · Learn how to use the std::sort() function in C++11 to sort containers like arrays and vectors. See examples of different parameters, user-defined types and lambda expressions.

9. People also ask

   How to sort an array in C++?

   • In this article, we will learn how to sort an array in C++. Example: To sort an array in C++, we can simply use the std::sort () method provided by the STL, which takes two parameters, the first one points to the array where the sorting needs to begin, and the second parameter is the length up to which we want to sort the array.

   How to Sort an Array in C++? | GeeksforGeeks

   www.geeksforgeeks.org/how-to-sort-an-array-in-cpp/

   See all results for this question

   How to sort a vector in C++?

   • C++ is providing you a function in STL (Standard Template Library) called sort which runs 20% to 50% faster than the hand-coded quick-sort. Here is the sample code for it's usage: sort () can be applied on both array and vector in C++ to sort or re-arrange elements . 1. C++ sort () in case of a vector: // importing vector, algorithm & iostream

   How to use std::sort to sort an array in C++ - Stack Overflow

   stackoverflow.com/questions/5897319/how-to-use-stdsort-to-sort-an-array-in-c

   See all results for this question

   How to sort a whole array using std?

   • So when we do intArray + SIZE for the second argument we are telling the array to sort up to the last element in the array. We can make sorting whole arrays even easier by using std::begin() and std::end(). std::begin() will return a iterator (pointer) to the first element in the array we pass it.

   Beginners guide to the std::sort() funct - C++ Articles - C++ Users

   cplusplus.com/articles/NhA0RXSz/

   See all results for this question

   How to sort a list in C#?

   • List not an array type in the C# language. We therefore have to use its separate Sort method. Also We can use LINQ with the same syntax on List as used on arrays. Both arrays and Lists implement the IEnumerable interface. Important The fruit names are sorted alphabetically, not by how tasty the fruit is. This is why "apple" comes first.

   C# Sort Examples - Dot Net Perls

   www.dotnetperls.com/sort

   See all results for this question

10. www.digitalocean.com · community · tutorialsUsing sort() in C++ std Library - DigitalOcean

    www.digitalocean.com · community · tutorials

    

    Aug 3, 2022 · Learn how to use the sort () function in the std library in C++ to sort arrays in ascending or descending order. See examples, prototypes, and comparison functions for the sort () function.