Dado un Set , la tarea es eliminar el último elemento de este Set en C++.
Ejemplos:
Input: set = [10 20 30 70 80 90 100 40 50 60],
valueOfElementToBeDeleted = 100
Output: 10 20 30 40 50 60 70 80 90
Input: set = [1 2 3 4 5],
valueOfElementToBeDeleted = 3
Output: 1 2 4 5
Los conjuntos son un tipo de contenedor asociativo en el que cada elemento tiene que ser único porque el valor del elemento lo identifica. El valor del elemento no se puede modificar una vez que se agrega al conjunto, aunque es posible eliminar y agregar el valor modificado de ese elemento.
Enfoque: en este método, el último elemento se elimina utilizando la función de borrado y llamándolo con el valor del último elemento como argumento. Si no se conoce el valor del último elemento, utilice el método anterior.
Sintaxis:
size_type erase (const value_type& valueOfElementToBeDeleted);
A continuación se muestra la implementación del enfoque anterior:
C++
// C++ program to delete an element
// of a Set by passing its value
#include <iostream>
#include <set>
using namespace std;
// Function to print the set
void printSet(set<int> myset)
{
// Get the iterator
set<int>::iterator it;
// printing all the elements of the set
for (it = myset.begin(); it != myset.end(); ++it)
cout << ' ' << *it;
cout << '\n';
}
// Function to delete the element of set
void deleteByValue(set<int> myset,
int valueOfElementToBeDeleted)
{
// printing all the elements of the set
cout << "\nSet originally: ";
printSet(myset);
// Erase the element that is equal to
// the value passed as the parameter
myset.erase(valueOfElementToBeDeleted);
// printing all the elements of the set
cout << "Set after deleting "
<< valueOfElementToBeDeleted
<< ": ";
printSet(myset);
}
// Driver code
int main()
{
set<int> myset;
// Get the set
for (int i = 1; i < 10; i++)
myset.insert(i * 10);
// Get the valueOfElementToBeDeleted
int valueOfElementToBeDeleted = 50;
// Delete an element from the Set
deleteByValue(myset, valueOfElementToBeDeleted);
return 0;
}
Java
// Java program to delete an element
// of a Set by passing its value
import java.io.*;
import java.util.*;
class GFG
{
// Function to print the set
static void printSet(TreeSet<Integer> myset)
{
// printing all the elements of the set
for(int it : myset)
{
System.out.print(it + " ");
}
System.out.println();
}
// Function to delete the element of set
static void deleteByValue(TreeSet<Integer> myset,
int valueOfElementToBeDeleted)
{
// printing all the elements of the set
System.out.print("\nSet originally: ");
printSet(myset);
// Erase the element that is equal to
// the value passed as the parameter
myset.remove(valueOfElementToBeDeleted);
// printing all the elements of the set
System.out.print("Set after deleting " +
valueOfElementToBeDeleted + ": ");
printSet(myset);
}
// Driver code
public static void main (String[] args)
{
//Set<Integer> myset = new HashSet<Integer>();
TreeSet<Integer> myset = new TreeSet<Integer>();
// Get the set
for (int i = 1; i < 10; i++)
{
myset.add(i * 10);
}
// Get the valueOfElementToBeDeleted
int valueOfElementToBeDeleted = 50;
// Delete an element from the Set
deleteByValue(myset, valueOfElementToBeDeleted);
}
}
// This code is contributed by avanitrachhadiya2155
Python3
# Python3 program to delete an element of a
# set by passing of a set by passing its value
# function to print the set
def printset(myset):
for i in myset:
print(i, end = " ")
print()
# function to delete the element of a set
def deleteByValue(myset, value):
myset = sorted(myset)
# printing original value
print("Set originally:", end = " ")
printset(myset)
# Erase the element that is equal to
# the value passed as the parameter
myset.remove(value)
# printing all the elements of the set
print("Set after deleting", value,
":", end = " ")
printset(myset)
# Driver code
myset = set()
for i in range(1, 10):
myset.add(i * 10)
# Get the valueOfElementToBeDeleted
value = 50
# Delete an element from the Set
deleteByValue(myset, value);
# This code is contributed
# by Mohit kumar 29
C#
// C# program to delete an element
// of a Set by passing its value
using System;
using System.Collections.Generic;
public class GFG
{
// Function to print the set
static void printSet(HashSet<int> myset)
{
// printing all the elements of the set
foreach(int it in myset)
{
Console.Write(it + " ");
}
Console.WriteLine();
}
// Function to delete the element of set
static void deleteByValue(HashSet<int> myset, int valueOfElementToBeDeleted)
{
// printing all the elements of the set
Console.Write("\nSet originally: ");
printSet(myset);
// Erase the element that is equal to
// the value passed as the parameter
myset.Remove(valueOfElementToBeDeleted);
// printing all the elements of the set
Console.Write("Set after deleting " + valueOfElementToBeDeleted + ": ");
printSet(myset);
}
// Driver code
static public void Main ()
{
//Set<Integer> myset = new HashSet<Integer>();
HashSet<int> myset = new HashSet<int>();
// Get the set
for (int i = 1; i < 10; i++)
{
myset.Add(i * 10);
}
// Get the valueOfElementToBeDeleted
int valueOfElementToBeDeleted = 50;
// Delete an element from the Set
deleteByValue(myset, valueOfElementToBeDeleted);
}
}
// This code is contributed by rag2127
Javascript
<script>
// JavaScript program to delete an element
// of a Set by passing its value
// Function to print the set
function printSet(myset)
{
// printing all the elements of the set
for(let it of myset.values())
{
document.write(it + " ");
}
document.write("<br>");
}
// Function to delete the element of set
function deleteByValue(myset, valueOfElementToBeDeleted)
{
// printing all the elements of the set
document.write("<br>Set originally: ");
printSet(myset);
// Erase the element that is equal to
// the value passed as the parameter
myset.delete(valueOfElementToBeDeleted);
// printing all the elements of the set
document.write("Set after deleting " +
valueOfElementToBeDeleted + ": ");
printSet(myset);
}
// Driver code
//Set<Integer> myset = new HashSet<Integer>();
let myset = new Set();
// Get the set
for (let i = 1; i < 10; i++)
{
myset.add(i * 10);
}
// Get the valueOfElementToBeDeleted
let valueOfElementToBeDeleted = 50;
// Delete an element from the Set
deleteByValue(myset, valueOfElementToBeDeleted);
// This code is contributed by patel2127
</script>
Producción:
Set originally: 10 20 30 40 50 60 70 80 90 Set after deleting 50: 10 20 30 40 60 70 80 90