human
Write me a code to minimum number of swaps required to sort an array and the other steps required given the following:
Minimum number of swaps required to sort an array | Function returns the minimum number of swaps required to sort the array.
Create two arrays and use as pairs where first array is element and second array is position of first element.
Sort the array by array element values to get right position of every element as the elements of second array ..
To keep track of visited elements . Initialize all elements as not visited or false ..
Initialize result.
Traverse array elements.
alreadt swapped or alreadt present at correct position.
find number of nodes in this cycle and add it to ans.
move to next node.
update answer by adding current cycle.
return answer.
Driver Code"
Solution in Python:
assistant
#Here is code to minimum number of swaps required to sort an array and the other steps required.
 def minSwaps ( arr ) :
	n = len ( arr )
	arrpos = [ * enumerate ( arr ) ]
	arrpos . sort ( key = lambda it : it [ 1 ] )
	vis = { k : False for k in range ( n ) }
	ans = 0
	for i in range ( n ) :
		if vis [ i ] or arrpos [ i ] [ 0 ] == i :
			continue
		cycle_size = 0
		j = i
		while not vis [ j ] :
			vis [ j ] = True
			j = arrpos [ j ] [ 0 ]
			cycle_size += 1
		if cycle_size > 0 :
			ans += ( cycle_size - 1 )
	return ans
arr = [ 1 , 5 , 4 , 3 , 2 ]
print ( minSwaps ( arr ) )