What is the best way to sort 1 million 32 bit integers?

1 million 32-bit integers = 4 MB of memory. You should sort them using some algorithm that uses external storage. Mergesort, for example.

Table of Contents

How do I sort a large array?

How to sort a big array with many repetitions?

Create an empty AVL Tree with count as an additional field.
Traverse input array and do following for every element ‘arr[i]’ …..a) If arr[i] is not present in tree, then insert it and initialize count as 1.
Do Inorder Traversal of tree.

How do you sort numbers?

Sort numbers

Select a cell in the column you want to sort.
On the Data tab, in the Sort & Filter group, do one of the following: To sort from low to high, click. (Sort Smallest to Largest). To sort from high to low, click. (Sort Largest to Smallest).

Which sorting algorithm is best for large data?

For large number of data sets, Insertion sort is the fastest. In the practical sorting, this case occurs rarely. Note that randomized Quicksort makes worst cases less possible, which will be the case for in-order data if the pivot point in Quicksort is chosen as the first element.

How do you find the largest and smallest number in an unsorted integer array?

Algorithm to find the smallest and largest numbers in an array

Input the array elements.
Initialize small = large = arr[0]
Repeat from i = 2 to n.
if(arr[i] > large)
large = arr[i]
if(arr[i] < small)
small = arr[i]
Print small and large.

How to sort million/billion 32-bit integers?

Sometimes interviewers ask how to sort million/billion 32-bit integers (e.g. here and here ). I guess they expect the candidates to compare O (N Log (N)) sort with radix sort. For million integers O (N Log (N)) sort is probably better but for billion they are probably the same.

Is O (n log (n) ) sort better for millions or billions of integers?

For million integers O (N Log (N)) sort is probably better but for billion they are probably the same. Does it make sense? Show activity on this post. If you get a question like this, they are not looking for the answer. What they are trying to do is see how you think through a problem.

How to sort random data in a file?

But when the data are totally random, you probably use the external sorting. For example, you can divide the data of the source file into the different files, every file has a unique range (File1 is from 0-1m, File2 is from 1m+1 – 2m , ect ), then you sort every single file, and lastly merge them into a new file. Show activity on this post.

How to sort an array of integers in a bitmap?

For every integer in given array just set coresponding bit. Then simply scan your bit map from left to right and get your integer array sorted.