def countSort(arr):
	output = [0 for i in range(len(arr))]
	count = [0 for i in range(256)]
	ans = ["" for _ in arr]
	for i in arr:
		count[ord(i)] += 1
	for i in range(256):
		count[i] += count[i-1]
	for i in range(len(arr)):
		output[count[ord(arr[i])]-1] = arr[i]
		count[ord(arr[i])] -= 1
	for i in range(len(arr)):
		ans[i] = output[i]
	return ans
arr = "geeksforgeeks"
ans = countSort(arr)
print("Sorted character array is % s" %("".join(ans)))