Merge pull request #157 from harish3124/harish3124

Added Array_Delete, Array_Reverse, Array_Left_Rotate in Python

1]. DSA/1]. Data Structures/01]. Array/Python/_003)_Delete_Element.py

@@ -0,0 +1,30 @@
+"""
+Function to delete an element in an array
+
+Takes in an array and an element to delete
+
+Returns an new Array
+"""
+
+
+def delete(arr, element):
+    if element not in arr:
+        return "no such element exist in array"
+
+    new_arr = []
+
+    for index in range(len(arr)):
+        if arr[index] != element:
+            new_arr.append(arr[index])
+
+    return new_arr
+
+
+arr = [1, 2, 3, 5]
+element = 2
+
+print("Before deletion:", arr)
+print("Deleting:", element)
+
+new_arr = delete(arr, element)
+print("After deletion:", new_arr)

1]. DSA/1]. Data Structures/01]. Array/Python/_004)_Reverse_Array.py

@@ -0,0 +1,21 @@
+"""
+Function to Reverse an Array
+
+Takes in an Array and Returns an New Array
+"""
+
+
+def reverse(arr):
+    new_arr = []
+
+    for index in range(len(arr)):
+        new_arr.insert(0, arr[index])
+
+    return new_arr
+
+
+arr = [1, 2, 3, 4, 5]
+new_arr = reverse(arr)
+
+print("Before Reverse:", arr)
+print("After Reverse:", new_arr)

1]. DSA/1]. Data Structures/01]. Array/Python/_005)_Left_Rotate_Array_by_1.py

@@ -0,0 +1,21 @@
+"""
+Function to rotate an the first element
+"""
+
+
+def left_rotate(arr, num):
+    tmp = arr[0]
+
+    for index in range(1, num):
+        arr[index - 1] = arr[index]
+
+    arr[num - 1] = tmp
+
+
+arr = [1, 2, 3, 4, 5]
+num = 2
+
+print("Before Left Rotation:", arr)
+
+left_rotate(arr, num)
+print("After '1' Left Rotation:", arr)