Let us assume size of array is N where each element is atmost k away from its target position. Now an algorithm that sorts inO (nlogk) time.
Examples:
1.Input-
a[] ={7,4,2,8,9,3,1}
k=3
Output-
a[]={1,2,3,4,7,8,9}
2 Input
a[] ={8,7,6,4,3,2,9,1}
k=8
Output
a[] ={1,2,3,4,6,7,8,9}
................Program to implement insertion sort........
static void insertionSort(int Arr[], int size)
{
int i, key, j;
for (i = 1; i < size; i++)
{
key= Arr[i];
j = i-1;
while (j >= 0 && Arr[j] > key)
{
Arr[j+1] = Arr[j];
j = j-1;
}
Arr[j+1]=key;
}
}
.............
Inner loop will run at almost k times. To move each element to correct location at most k elements are required to move. So complexity will be O(nk).
You can also solve it with the help of Heap data structures.
Im really trying to understand fully and PROPERLY. very lost on the topic. Please help me...
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