Any of those help Given an array of unsorted positive integers and a desired sum, what is the best way to print in ascending order 4 distinct 0based indexes of elements in the array that add up to an input sum, if such indexes exist. If there are multiple solutions I just need to print the lowest one according to the lexicographical order code :
In [36]: A
Out[36]: [3, 2, 1, 4, 5, 7, 6, 9, 7, 8]
In [37]: S
Out[37]: 30
In [38]: N
Out[38]: 4
In [39]: for tup in itertools.combinations(A,N):
....: if sum(tup) == S:
....: for perm in itertools.product(*[[i for i,num in enumerate(A) if num==n] for n in tup]):
....: print(*sorted(perm))
....:
5 6 7 9
6 7 8 9
5 6 7 9
6 7 8 9
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Unsorted n array algorithm to find duplicates using 2 nested loops
By : Jayson Aquino
Date : March 29 2020, 07:55 AM
should help you out The following question was: code :
bool IsHaveDup(int[] myArray, int arraySize)
{
int i, j;
bool isHaveDup = false;
for (i = 0; i < arraySize  1; i++)
{
for (j = i + 1; j < arraySize; j++)
{
if (myArray[i] == myArray[j])
{
isHaveDup = true;
break;
}
}
if (isHaveDup)
{
break;
}
}
return isHaveDup;
}

Find Median in unsorted array using Quickselect algorithm
By : Fermata
Date : March 29 2020, 07:55 AM

Algorithm  Find maximum sum of two numbers in unsorted array that have a minimum distance
By : Pedro Braconnot
Date : March 29 2020, 07:55 AM
this one helps. For each position in the array, find and store the maximum of the elements up to that position. This can be done in O(n) for all positions by updating the maximum in each step. By scanning righttoleft in the same manner, find and store for each position the maximum of all elements from that position to the end.

Complexity of the following algorithm to find minimum value in an unsorted array
By : chko.luevano
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , By using divide & conquer approach, if we divide an array into two halves repeatedly, until they reduce into size of two after which we can in O(1) time return the minimum of the two. Extending the approach, in order to merge two subarrays A & B with their minimum 'a' & 'b' respectively, we can directly return their minimum in O(1) time making merging step a constant time operation. , after which we can in O(1) time return the minimum of the two.

How to find 2 numbers and their sum in an unsorted array
By : Eskimu
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , This is very similar to the standard problem 3SUM, which many of the related questions along the right are about. Your solution is O(n^2 lg n); there are O(n^2) algorithms based on sorting the array, which work with slight modification for this variant. The best known lower bound is O(n lg n) (because you can use it to perform a comparison sort, if you're clever about it). If you can find a subquadratic algorithm or a tighter lower bound, you'll get some publications out of it. :)

