# How do you sort vectors by vectors?

## How do you sort vectors by vectors?

For example, you could use a lambda function: std::**vector** vec; // Fill it std::**sort**(vec. begin(), vec. end(), [](const std::**vector**& a, const std::**vector**& b) { return a[2] < b[2]; });

## Can you sort vectors?

**Sorting a vector** in C++ **can** be done by using std::**sort**(). ... 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 do you sort a vector string?

**“ sort a vector of strings according to their length c++” Code Answer**

- std::
**vector**v; - std::
**sort**(v. begin(), v. end(), [] - (const std::
**string**& first, const std::**string**& second){ - return first. size() < second. size();

## What are the types of sorting?

**Types of Sorting Algorithms:**

- Quick Sort.
**Bubble Sort**.- Merge Sort.
**Insertion Sort**.**Selection Sort**.- Heap Sort.
- Radix Sort.
- Bucket Sort.

## What is internal and external sorting techniques?

**Internal sorting**: If the input data is such that it can be adjusted in the main memory at once, it is called **internal sorting**. **External sorting**: If the input data is such that it cannot be adjusted in the memory entirely at once, it needs to be stored in a hard disk, floppy disk, or any other storage device.

## How many types of sorting are there in C?

**Types of Sorting in C**

- Bubble
**Sort**. Bubble**sort**may be defined as the**sorting**algorithm that follows the approach of replacing the value in the first index with the smallest value in the array and keep it repeating until the list is**sorted**. ... - Selection
**Sort**. ... - Quick
**Sort**. ... - Merge
**Sort**. ... - Heapsort. ...
- Insertion
**Sort**.

## What is array in C?

An **array** is defined as the collection of similar type of data items stored at contiguous memory locations. **Arrays** are the derived data type in **C** programming language which can store the primitive type of data such as int, char, double, float, etc.

## What is sorting array in C?

This is a **C** Program to **sort** an **array** in ascending order. This program will implement a one-dimentional **array** of some fixed size, filled with some random numbers, then will **sort** all the filled elements of the **array**. ... The **array** elements are in unsorted fashion, to **sort** them, make a nested loop.

## Is bubble sort stable?

Yes

## Where is bubble sort used?

In computer graphics **bubble sort** is popular for its capability to detect a very small error (like swap of just two elements) in almost-**sorted** arrays and fix it with just linear complexity (2n).

## What is the best time complexity for bubble sort?

Note: O ( n ) O(n) O(n) is the **best**-**case** running **time** for **bubble sort**. It is possible to modify **bubble sort** to keep track of the number of swaps it performs. If an array is already in **sorted** order, and **bubble sort** makes no swaps, the algorithm can terminate after one pass.

## What is the best time complexity?

Sorting algorithms

Algorithm | Data structure | Time complexity:Best |
---|---|---|

Merge sort | Array | O(n log(n)) |

Heap sort | Array | O(n log(n)) |

Smooth sort | Array | O(n) |

Bubble sort | Array | O(n) |

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