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#!/bin/python3
# --------- REVERSE Insertion Sort Algorithm
# Implementation of algorithm in python
# --------- Imported modules
import inputoutput as io
import csv
import sys
# ingressing data through cli arguments and imported modules
target = sys.argv[1]
numdata = io.ingressCSV(target)
# insertion sort algorithm, as function
def insertionSort(data):
for i in range(1, len(data)):
# setting the key to the current entry in row
key = data[i]
#
j = i - 1
# left comparison FIXME: flipped key < data[j]
while j >= 0 and key > data[j]:
data[j + 1] = data[j]
j = j - 1
# move key after element smaller than it
data[j + 1] = key
# sorting call
insertionSort(numdata)
# wrapping up and appending "-insertionsorted" to CSV
target = target[:-4]+"-reverse-insertion"+target[-4:]
print("Sorting done! Writing to file.")
io.egressCSV(numdata,target)
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