Solution of 1088 and 1092

Author: Garvit244

1000-1100q/1088.py

@@ -30,4 +30,31 @@
 Note:
 
 1 <= N <= 10^9
-'''
+'''
+
+class Solution(object):
+    result = 0
+    def confusingNumberII(self, N):
+        """
+        :type N: int
+        :rtype: int
+        """
+        original_a = [0, 1, 6, 8, 9]
+        o_rotation = [0, 1, 9, 8, 6]
+        
+        def recursive(original, rotation, digit, N):
+            if original > N:
+                return
+            if original and original != rotation:
+                self.result += 1
+            
+            start = original == 0
+            if digit >= 1000000000:
+                return
+            for index in range(start, 5):
+                recursive(original * 10 + original_a[index], rotation + o_rotation[index]*digit, digit*10, N)
+            
+        recursive(0, 0, 1, N)
+        if (N == 1000000000):
+            self.result += 1
+        return self.result

1000-1100q/1092.py

@@ -0,0 +1,55 @@
+'''
+Given two strings str1 and str2, return the shortest string that has both str1 and str2 as subsequences.  If multiple answers exist, you may return any of them.
+
+(A string S is a subsequence of string T if deleting some number of characters from T (possibly 0, and the characters are chosen anywhere from T) results in the string S.)
+
+ 
+
+Example 1:
+
+Input: str1 = "abac", str2 = "cab"
+Output: "cabac"
+Explanation: 
+str1 = "abac" is a substring of "cabac" because we can delete the first "c".
+str2 = "cab" is a substring of "cabac" because we can delete the last "ac".
+The answer provided is the shortest such string that satisfies these properties.
+ 
+
+Note:
+
+1 <= str1.length, str2.length <= 1000
+str1 and str2 consist of lowercase English letters.
+'''
+
+class Solution(object):
+    def shortestCommonSupersequence(self, str1, str2):
+        """
+        :type str1: str
+        :type str2: str
+        :rtype: str
+        """
+        def lcs(A, B):
+            n, m = len(A)+1, len(B)+1
+            dp = [["" for _ in range(m)] for _ in range(n)]
+            for index_i in range(1, n):
+                for index_j in range(1, m):
+                    if A[index_i-1] == B[index_j-1]:
+                        dp[index_i][index_j] = dp[index_i-1][index_j-1] + A[index_i - 1]
+                    else:
+                        dp[index_i][index_j] = max(dp[index_i-1][index_j], dp[index_i][index_j-1], key=len)
+            return dp[-1][-1]
+        
+        result = ""
+        index_i, index_j = 0, 0
+        for s in lcs(str1, str2):
+            while str1[index_i] != s:
+                result += str1[index_i]
+                index_i += 1
+            while str2[index_j] != s:
+                result += str2[index_j]
+                index_j += 1
+                
+            result += s
+            index_i, index_j = index_i+1, index_j+1
+            
+        return result + str1[index_i:] + str2[index_j:]

README.md

@@ -15,10 +15,11 @@ Python solution of problems from [LeetCode](https://leetcode.com/).
 ##### [Problems 1000-1100](./1000-1100q/)
 | # | Title | Solution | Difficulty |
 |---| ----- | -------- | ---------- |
+|1092|[Shortest Common Supersequence](https://leetcode.com/problems/shortest-common-supersequence)|[Python](./1000-1100q/1092.py)|Hard|
 |1091|[Shortest Path in Binary Matrix](https://leetcode.com/problems/shortest-path-in-binary-matrix)|[Python](./1000-1100q/1091.py)|Medium|
 |1090|[Largest Values From Labels ](https://leetcode.com/problems/largest-values-from-labels)|[Python](./1000-1100q/1090.py)|Medium|
 |1089|[Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros)|[Python](./1000-1100q/1089.py)|Easy|
-|1088|[]
+|1088|[Confusing Number II](https://leetcode.com/problems/confusing-number-ii)|[Python](./1000-1100q/1088.py)|Hard|
 |1087|[Brace Expansion](https://leetcode.com/problems/brace-expansion)|[Python](./1000-1100q/1087.py)|Medium|
 |1086|[High Five](https://leetcode.com/problems/high-five)|[Python](./1000-1100q/1086.py)|Medium|
 |1085|[Sum of Digits in the Minimum Number](https://leetcode.com/problems/sum-of-digits-in-the-minimum-number)|[Python](./1000-1100q/1085.py)|Medium|