committing new python challanges

codewars_solns/python_challanges/FindtheDifferenceofTwoArrays.py

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+"""Find the Difference of Two Arrays
+Easy
+Topics
+Companies
+Hint
+Given two 0-indexed integer arrays nums1 and nums2, return a list answer of size 2 where:
+
+answer[0] is a list of all distinct integers in nums1 which are not present in nums2.
+answer[1] is a list of all distinct integers in nums2 which are not present in nums1.
+Note that the integers in the lists may be returned in any order.
+
+Example 1:
+Input: nums1 = [1,2,3], nums2 = [2,4,6]
+Output: [[1,3],[4,6]]
+Explanation:
+For nums1, nums1[1] = 2 is present at index 0 of nums2, whereas nums1[0] = 1 and nums1[2] = 3 are not present in nums2. Therefore, answer[0] = [1,3].
+For nums2, nums2[0] = 2 is present at index 1 of nums1, whereas nums2[1] = 4 and nums2[2] = 6 are not present in nums2. Therefore, answer[1] = [4,6].
+Example 2:
+Input: nums1 = [1,2,3,3], nums2 = [1,1,2,2]
+Output: [[3],[]]
+Explanation:
+For nums1, nums1[2] and nums1[3] are not present in nums2. Since nums1[2] == nums1[3], their value is only included once and answer[0] = [3].
+Every integer in nums2 is present in nums1. Therefore, answer[1] = [].
+ 
+Constraints:
+1 <= nums1.length, nums2.length <= 1000
+-1000 <= nums1[i], nums2[i] <= 1000"""
+
+from typing import List
+class Solution:
+    def findDifference(self, nums1: List[int], nums2: List[int]) -> List[List[int]]:
+        new_list=[[],[]]
+        n1_l=len(nums1)
+        n2_l=len(nums2)
+        if n1_l>n2_l:
+           nums2+=[nums2[0]]*(n1_l-n2_l)
+        elif n2_l>n1_l:
+            nums1+=[nums1[0]]*(n2_l-n1_l)
+
+        for i,j in zip(nums1,nums2):
+            if not j in nums1:
+                new_list[1]+=[j]
+            if not i in nums2:
+                new_list[0]+=[i]
+        new_list[0]=list(set(new_list[0]))
+        new_list[1]=list(set(new_list[1]))
+        return new_list

codewars_solns/python_challanges/sorting.py

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+myarr=[6, 3, 0, 5]
+
+
+def sort_buble_sort(myarr):
+    n=len(myarr)
+    for i in range(n):
+        swapped=False
+        for j in range(n-i-1):
+            if myarr[j]>myarr[j+1]:
+                myarr[j],myarr[j+1]=myarr[j+1],myarr[j]
+                swapped=True
+        if swapped == False:
+            break
+    return myarr
+print("buble_sort \n",sort_buble_sort(myarr))
+
+myarr=[6, 3, 0, 5]
+def selection_sort(myarr):
+    n=len(myarr)
+    for i in range(n):
+        min_ind=i
+        for j in range(i+1,n):
+            if myarr[min_ind]>myarr[j]:
+               min_ind=j
+        myarr[i],myarr[min_ind]=myarr[min_ind],myarr[i]
+    return myarr
+print("selection_sort \n",selection_sort(myarr))
+
+myarr=[6, 3, 0, 5]
+def mergesort(myarr):
+    if len(myarr)>1:
+        mid = len(myarr)//2
+        L=myarr[:mid]
+        R=myarr[mid:]
+        mergesort(L)
+        mergesort(R)
+        i=j=k=0
+        while i<len(L) and j < len(R):
+            if L[i]<R[j]:
+                myarr[k]=L[i]
+                i+=1
+            else: 
+                myarr[k]=R[j]
+                j+=1
+            k+=1
+        while i<len(L):
+            myarr[k]=L[i]
+            i+=1
+            k+=1
+        while j<len(R):
+            myarr[k]=R[j]
+            j+=1
+            k+=1
+        return myarr
+print("merge_sort \n",mergesort(myarr))
+
+myarr=[6, 3, 0, 5]
+def quicksort(myarr):
+    def partition(arr,low,high):
+        pivot=arr[high]
+        i=low-1
+        for j in range(low,high):
+            if arr[j]<=pivot:
+                i=i+1
+                arr[i],arr[j]=arr[j],arr[i]
+        arr[i+1],arr[high]=arr[high],arr[i+1]
+        return i+1
+
+    def sort(arr,low,high):
+        if low<high:
+            pi=partition(arr,low,high)
+            sort(arr,low,pi-1)
+            sort(arr,pi+1,high)
+
+    sort(myarr,0,len(myarr)-1)
+    return myarr
+
+print("quicksort \n",quicksort(myarr))

codewars_solns/python_challanges/test_FindtheDifferenceofTwoArrays.py

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+import unittest
+from FindtheDifferenceofTwoArrays import Solution
+
+class test_FindtheDifferenceofTwoArrays(unittest.TestCase):
+    def test(self):
+        soln=Solution()
+        self.assertEqual(soln.findDifference(nums1 = [1,2,3], nums2 = [2,4,6]),[[1,3],[4,6]])
+        self.assertEqual(soln.findDifference(nums1 = [1,2,3,3], nums2 = [1,1,2,2]),[[3],[]])
+        self.assertEqual(soln.findDifference(nums1 = [-68,-80,-19,-94,82,21,-43], nums2 = [-63]),[[-94, -19, -80, 82, 21, -43, -68],[-63]])
+
+if __name__ == '__main__':
+    unittest.main()