Added "02-Remove Duplicates from Sorted Array.py"

Author: Saidev

02-Remove Duplicates from Sorted Array.py

@@ -0,0 +1,26 @@
+'''
+Example 1:
+
+Input: nums = [1,1,2]
+Output: 2, nums = [1,2,_]
+Explanation: Your function should return k = 2, with the first two elements of nums being 1 and 2 respectively.
+It does not matter what you leave beyond the returned k (hence they are underscores).
+Example 2:
+
+Input: nums = [0,0,1,1,1,2,2,3,3,4]
+Output: 5, nums = [0,1,2,3,4,_,_,_,_,_]
+Explanation: Your function should return k = 5, with the first five elements of nums being 0, 1, 2, 3, and 4 respectively.
+It does not matter what you leave beyond the returned k (hence they are underscores).
+'''
+
+def removeDuplicates(nums):
+    a, b = 0, 1
+    while b != len(nums):
+        if nums[a] != nums[b]:
+            nums[a+1] = nums[b]
+            a += 1
+        b += 1
+    return a
+
+nums = [1, 1, 2]
+print(removeDuplicates(nums))