Merge pull request #2517 from Dhyan-P-Shetty/main

Create: 0402-remove-k-digits.py, Create: 1768-merge-strings-alternately.py

Author: Dhyan-P-Shetty

python/0402-remove-k-digits.py

@@ -0,0 +1,13 @@
+class Solution:
+    def removeKdigits(self, num: str, k: int) -> str:
+        stack = []
+        for i in num:
+            while stack and stack[-1] > i and k > 0:
+                k -= 1
+                stack.pop()
+            if stack or i is not "0":
+                stack.append(i)
+        if k:
+            stack = stack[:-k]
+        return ''.join(stack) or '0'
+        

python/1768-merge-strings-alternately.py

@@ -0,0 +1,14 @@
+class Solution:
+    def mergeAlternately(self, word1: str, word2: str) -> str:
+        i = j = 0
+        res = []
+
+        while i < len(word1) and j < len(word2):
+            res.append(word1[i])
+            res.append(word2[j])
+            i += 1
+            j += 1
+        res.append(word1[i:])
+        res.append(word2[j:])
+        return ''.join(res)
+