125 done

Author: OfficialCodeVoyage

125_Valid Palindrome/solution.py

@@ -0,0 +1,49 @@
+###A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all
+# non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers.
+#
+# Given a string s, return true if it is a palindrome, or false otherwise.
+#
+#
+#
+# Example 1:
+#
+# Input: s = "A man, a plan, a canal: Panama"
+# Output: true
+# Explanation: "amanaplanacanalpanama" is a palindrome.
+# Example 2:
+#
+# Input: s = "race a car"
+# Output: false
+# Explanation: "raceacar" is not a palindrome.
+# Example 3:
+#
+# Input: s = " "
+# Output: true
+# Explanation: s is an empty string "" after removing non-alphanumeric characters.
+# Since an empty string reads the same forward and backward, it is a palindrome.
+#
+
+
+s = "A man, a plan, a canal: Panama"
+
+def palindrome(s):
+    string = ''
+
+    for i in s:
+        if i.isalpha() or i.isnumeric():
+            string += i.lower()
+
+
+    left, right = 0, len(string) - 1
+
+    while left < right:
+        if string[left] == string[right]:
+            left += 1
+            right -= 1
+        else:
+            return False
+    return True
+
+
+
+print(palindrome(s))

practice_small_code.ipynb

@@ -82,8 +82,8 @@
   {
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     "ExecuteTime": {
-     "end_time": "2024-08-07T17:27:28.052977Z",
-     "start_time": "2024-08-07T17:27:28.048411Z"
+     "end_time": "2024-08-08T01:55:13.160751Z",
+     "start_time": "2024-08-08T01:55:13.152733Z"
     }
    },
    "cell_type": "code",
@@ -101,15 +101,7 @@
      ]
     }
    ],
-   "execution_count": 10
-  },
-  {
-   "metadata": {},
-   "cell_type": "code",
-   "outputs": [],
-   "execution_count": null,
-   "source": "",
-   "id": "3afd94d8f063bc04"
+   "execution_count": 1
   }
  ],
  "metadata": {