Table of Contents
How to sort a 2D vector in C + +?
It is an matrix implemented with the help of vectors. In this article, we will explore different ways to sort a 2 dimensional (2D) vector in C++ which includes sorting by row, column, a specific row or a specific column. Here ‘v’ is the name of 1D vector and ‘int’ is the data type stored.
How to sort in ascending order in C + +?
Sorting particular row (Ascending order): In C++, we can sort particular rows in the 2D vector using sort () function, by default the sort () functions sorts the vector in ascending order.
How to get a stable sort in C + +?
It is defined in<algorithm> header. To get a stable sort std::stable_sort is used. It is exactly like sort() but maintains the relative order of equal elements. Quicksort(), mergesort() can also be used, as per requirement.
How to sort column by row and column?
For example if the chosen column is second, the row with smallest value in second column becomes first row, second smallest value in second column becomes second row, and so on. This is achieved by passing a third argument in “sort ()” as a call to user defined explicit function.
It is an matrix implemented with the help of vectors. In this article, we will explore different ways to sort a 2 dimensional (2D) vector in C++ which includes sorting by row, column, a specific row or a specific column. Here ‘v’ is the name of 1D vector and ‘int’ is the data type stored.
How to sort a vector in ascending order?
Maps the original x to the sorted x in ascending order. I can probably implement some bubble sort which does not only sort x but performs the same transpositions on the vector {0,1,2,…} and outputs both, but I believe someone must have thought about it and especially have done it efficiently.
How does the sort function in C + + work?
Also, we are using sort function to sort the vector array in increasing order by using begin and end iterators in sort function. As a result, you can see the given vector array is sorted in increasing order correctly. For loop is used to traverse through all the given values.
For example if the chosen column is second, the row with smallest value in second column becomes first row, second smallest value in second column becomes second row, and so on. This is achieved by passing a third argument in “sort ()” as a call to user defined explicit function.