sort color problem is added

Author: soamtripathy

python/0075-sort-colors.py

@@ -0,0 +1,20 @@
+class Solution:
+    def sortColors(self, nums: List[int]) -> None:
+        """
+        Do not return anything, modify nums in-place instead.
+        """
+        lo = 0
+        mid  = 0
+        high = len(nums)-1
+        while mid<= high:
+            if nums[mid] == 0:
+                nums[lo], nums[mid] = nums[mid], nums[lo]
+                lo+=1
+                mid+=1
+            elif nums[mid] == 1:
+                mid+=1
+            else:
+                nums[mid], nums[high] = nums[high], nums[mid]
+                high-=1
+        return nums
+