Với một mảng số nguyên với các phần tử lặp đi lặp lại, nhiệm vụ là tìm tổng của tất cả các phần tử riêng biệt trong mảng.examples: & nbsp;
Examples: Input : arr[] = {12, 10, 9, 45, 2, 10, 10, 45,10};
Output : 78
Here we take 12, 10, 9, 45, 2 for sum
because it's distinct elements
Input : arr[] = {1, 10, 9, 4, 2, 10, 10, 45 , 4};
Output : 71Một giải pháp đơn giản là sử dụng hai vòng lồng nhau. Vòng ngoài chọn một phần tử bắt đầu từ phần tử ngoài cùng bên trái. Vòng lặp bên trong kiểm tra xem phần tử có mặt ở bên trái của nó không. Nếu có mặt, sau đó bỏ qua phần tử.Simple Solution is to use two nested loops. The outer loop picks an element one by one starting from the leftmost element. The inner loop checks if the element is present on left side of it. If present, then ignores the element. Độ phức tạp về thời gian: O (N2) & NBSP; Không gian phụ trợ: O (1) O(n2)
Auxiliary
Space : O(1) Một giải pháp tốt hơn cho vấn đề này là sử dụng kỹ thuật sắp xếp, trước tiên chúng tôi sắp xếp tất cả các yếu tố của mảng theo thứ tự tăng dần và tìm một yếu tố riêng biệt trong mảng. & Nbsp;Better Solution of this problem is that using sorting technique we firstly sort all elements of array in ascending order and and find one by one distinct elements in array. Implementation: C++#include<bits/stdc++.h>
using namespace std;
int findSum(int arr[], int #include<bits/stdc++.h>0
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2#include<bits/stdc++.h>3
#include<bits/stdc++.h>2int #include<bits/stdc++.h>6
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int using1
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4using5 using6
using7using8
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2namespace2 namespace3
namespace0
int namespace6
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2int std;0
#include<bits/stdc++.h>2int std;3std;4std;5std;4#include<bits/stdc++.h>9intstd;9
#include<bits/stdc++.h>2int1
#include<bits/stdc++.h>2namespace2 int4
namespace0
Javaint6 int7
int8 int9 findSum(0
#include<bits/stdc++.h>2findSum(2 int findSum(int arr[], int findSum(8
using4int0
using4int int3int4int5
using4#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int arr[], 0int4arr[], 2arr[], 3arr[], 4
using7using5 arr[], 7arr[], 3arr[], 9
int0int1arr[], 3int5
using7namespace0
using4namespace0
using4namespace2 namespace3
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2int8 findSum(2 #include<bits/stdc++.h>06 #include<bits/stdc++.h>07
Các using4int #include<bits/stdc++.h>29
using4#include<bits/stdc++.h>31
#include<bits/stdc++.h>2namespace0
namespace0
Python3#include<bits/stdc++.h>35 #include<bits/stdc++.h>36
#include<bits/stdc++.h>2#include<bits/stdc++.h>38
#include<bits/stdc++.h>2#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 #include<bits/stdc++.h>42int4#include<bits/stdc++.h>44
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47__148
using4using5 #include<bits/stdc++.h>58#include<bits/stdc++.h>41 #include<bits/stdc++.h>60#include<bits/stdc++.h>61arr[], 3#include<bits/stdc++.h>63
using7#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 #include<bits/stdc++.h>40 #include<bits/stdc++.h>61 #include<bits/stdc++.h>60#include<bits/stdc++.h>61arr[], 3__
#include<bits/stdc++.h>2namespace2 #include<bits/stdc++.h>40
#include<bits/stdc++.h>35 #include<bits/stdc++.h>77
Các #include<bits/stdc++.h>2#include<bits/stdc++.h>99#include<bits/stdc++.h>41 using01using02
#include<bits/stdc++.h>2using04using05
using5 using07#include<bits/stdc++.h>41#include<bits/stdc++.h>41 using10using11
#include<bits/stdc++.h>2namespace6
C#using using15
int9 using17
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2findSum(2 int findSum(int using24int #include<bits/stdc++.h>0
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4using30
using4int using33
using4#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int using38
using4#include<bits/stdc++.h>1
using7using5 using43
using7#include<bits/stdc++.h>1
int0using47
using7namespace0
using4namespace0
using4namespace2 namespace3
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2int8 findSum(2 #include<bits/stdc++.h>06 #include<bits/stdc++.h>07
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
Các using4int #include<bits/stdc++.h>29
using4using71
#include<bits/stdc++.h>2namespace0
namespace0
#include<bits/stdc++.h>35 #include<bits/stdc++.h>36using75
#include<bits/stdc++.h>2#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 #include<bits/stdc++.h>42int4#include<bits/stdc++.h>44
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2using80
#include<bits/stdc++.h>2using82
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47__148
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4using5 using6
using7using8
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2namespace2 namespace3
namespace0
#include<bits/stdc++.h>2namespace00
#include<bits/stdc++.h>2namespace02
#include<bits/stdc++.h>2namespace04
namespace05
int namespace6 O(n log n)
Auxiliary Space : O(1)
#include<bits/stdc++.h>2int std;0Efficient solution of this problem is that using unordered_set we run a single for loop and which value
comes first time its add in sum variable and store in hash table that for next time we not use this value.
Implementation: C++#include<bits/stdc++.h>
using namespace std;
#include<bits/stdc++.h>2int std;3std;4std;5std;4#include<bits/stdc++.h>9intstd;9
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2int #include<bits/stdc++.h>6
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int using1
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int using1
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4using5 using6
#include<bits/stdc++.h>2namespace2 namespace3
using7namespace37
using7namespace39
using4namespace0
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2namespace2 namespace3
namespace0
int namespace6
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2int std;0
#include<bits/stdc++.h>2int std;3std;4std;5std;4#include<bits/stdc++.h>9intstd;9
#include<bits/stdc++.h>2int1
#include<bits/stdc++.h>2namespace2 int4
namespace0
Javaint6 namespace70
int9 using17
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2findSum(2 int findSum(int arr[], int #include<bits/stdc++.h>0
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4int namespace86____74namespace88
using4namespace90namespace91 namespace92
using4#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int arr[], 0int4namespace99
using4#include<bits/stdc++.h>1
using7using5 std;04
using7#include<bits/stdc++.h>1
int0namespace37
int0std;10
using7namespace0
using4namespace0
using4namespace2 namespace3
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2int8 findSum(2 #include<bits/stdc++.h>06 std;24
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
Các using4int #include<bits/stdc++.h>29
using4#include<bits/stdc++.h>31
#include<bits/stdc++.h>2namespace0
namespace0
Python3#include<bits/stdc++.h>35 std;55
#include<bits/stdc++.h>2std;57#include<bits/stdc++.h>41 std;59std;60
#include<bits/stdc++.h>2#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 int4
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47#include<bits/stdc++.h>48 #include<bits/stdc++.h>49std;70
using4using5 std;73std;74 #include<bits/stdc++.h>48 std;76
using7std;78
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47#include<bits/stdc++.h>48 std;76
using4#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 #include<bits/stdc++.h>40 #include<bits/stdc++.h>61 std;89
#include<bits/stdc++.h>2namespace2 #include<bits/stdc++.h>40
Các #include<bits/stdc++.h>99#include<bits/stdc++.h>41 using01using02
using04using05
C#using using15
using int21
int9 using17
#include<bits/stdc++.h>1
#include<bits/stdc++.h>2findSum(2 int findSum(int arr[], int #include<bits/stdc++.h>0
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4int namespace86____74namespace88
using4namespace90namespace91 namespace92
using4#include<bits/stdc++.h>8 #include<bits/stdc++.h>9int arr[], 0int4namespace99
using4#include<bits/stdc++.h>1
using7using5 std;04
using7#include<bits/stdc++.h>1
int0namespace37
using4namespace2 namespace3
using7namespace0
using4namespace0
using4namespace2 namespace3
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2int8 findSum(2 #include<bits/stdc++.h>06 std;24
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
Các using4int #include<bits/stdc++.h>29
using4using71
#include<bits/stdc++.h>2namespace0
namespace0
#include<bits/stdc++.h>35 std;55using75
#include<bits/stdc++.h>2std;57#include<bits/stdc++.h>41 std;59std;60
#include<bits/stdc++.h>2#include<bits/stdc++.h>1
using4using82
#include<bits/stdc++.h>2#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 int4
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47#include<bits/stdc++.h>48 #include<bits/stdc++.h>49std;70
using4#include<bits/stdc++.h>1
using4using5 std;73std;74 #include<bits/stdc++.h>48 std;76
using7#include<bits/stdc++.h>1
int0namespace37
int0std;10
using7namespace0
using4namespace0
using4namespace2 namespace3
#include<bits/stdc++.h>2namespace0
#include<bits/stdc++.h>2namespace00
using4namespace02
using4namespace04
namespace05
#include<bits/stdc++.h>2int8 findSum(2 #include<bits/stdc++.h>06 std;24 O(n)
Auxiliary Space: O(n)
Các Approach: using4int #include<bits/stdc++.h>29Counter() function#include<bits/stdc++.h>35 std;55#include<bits/stdc++.h>2std;57#include<bits/stdc++.h>41 std;59std;60
#include<bits/stdc++.h>2#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 int4the above approach.
Python3#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47#include<bits/stdc++.h>48 #include<bits/stdc++.h>49std;70
using4using5 std;73std;74 #include<bits/stdc++.h>48 std;76
#include<bits/stdc++.h>2#include<bits/stdc++.h>8 #include<bits/stdc++.h>47#include<bits/stdc++.h>48 std;76
using4#include<bits/stdc++.h>40 #include<bits/stdc++.h>41 #include<bits/stdc++.h>40 #include<bits/stdc++.h>61 std;89
#include<bits/stdc++.h>2namespace2 #include<bits/stdc++.h>40
Các #include<bits/stdc++.h>99#include<bits/stdc++.h>41 using01using02
using using15
#include<bits/stdc++.h>2using04findSum(83
using int21 O(n)
Auxiliary Space: O(n)
#include<bits/stdc++.h>2findSum(2 int findSum(int using24int #include<bits/stdc++.h>0DANISH_RAZA. If you like GeeksforGeeks and would like to contribute, you can also write an article using write.geeksforgeeks.org or mail your article to .
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