arrays

Author: Richa238

Array Boot Camp EPI.py

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+
+
+#Without using additional space distribute numbers in an array so that even numbers are at teh start and odd numbers are after that
+#used partitioning, partitioned data into even, odd and unclassified
+
+
+def even_odd_array(A):
+    even_index=0
+    odd_index=len(A)-1
+
+    while even_index<odd_index:
+        if A[even_index]%2==0:
+            even_index+=1 #incrementing even index if even number found
+
+        else:
+            A[even_index],A[odd_index]=A[odd_index],A[even_index]
+            odd_index-=1
+    print(A)
+
+
+A=[1,4,3,7,2,10]
+even_odd_array(A)

EPI_Array.py

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+def dutch_flag(A, pivot_index):
+    p=pivot_index
+    part=0
+    for i in range(len(A)):
+        if A[i]<A[p]:
+            A[i],A[part]==A[part],A[i]
+            part+=1
+        elif A[i]==A[p]:
+            continue
+        elif A[i]>A[p]:
+            continue
+    A[part],A[p]==A[p],A[part]
+    print(A)
+
+A = [1, 4, 3, 7, 2, 10, 9, 12, 45, 23, 65, 43, 100, 25, 60]
+dutch_flag(A,8)

README.md

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-# Algo
+# py_algo_ds