Jun 05

Author: siddydutta

2025-06-June-LeetCoding-Challenge/Lexicographically Smallest Equivalent String.py

@@ -0,0 +1,47 @@
+class UnionFind:
+    def __init__(self):
+        self.parent = dict()
+
+    def find(self, x: str) -> str:
+        if x not in self.parent:
+            self.parent[x] = x
+        if x != self.parent[x]:
+            self.parent[x] = self.find(self.parent[x])
+        return self.parent[x]
+
+    def union(self, x: str, y: str) -> None:
+        root_x = self.find(x)
+        root_y = self.find(y)
+        if root_x < root_y:
+            self.parent[root_y] = root_x
+        else:
+            self.parent[root_x] = root_y
+
+
+class Solution:
+    def smallestEquivalentString(self, s1: str, s2: str, baseStr: str) -> str:
+        union_find = UnionFind()
+        for ch1, ch2 in zip(s1, s2):
+            union_find.union(ch1, ch2)
+        return ''.join([union_find.find(ch) for ch in baseStr])
+
+
+def main():
+    s1 = 'parker'
+    s2 = 'morris'
+    baseStr = 'parser'
+    assert Solution().smallestEquivalentString(s1, s2, baseStr) == 'makkek'
+
+    s1 = 'hello'
+    s2 = 'world'
+    baseStr = 'hold'
+    assert Solution().smallestEquivalentString(s1, s2, baseStr) == 'hdld'
+
+    s1 = 'leetcode'
+    s2 = 'programs'
+    baseStr = 'sourcecode'
+    assert Solution().smallestEquivalentString(s1, s2, baseStr) == 'aauaaaaada'
+
+
+if __name__ == '__main__':
+    main()

2025-06-June-LeetCoding-Challenge/README.md

@@ -8,7 +8,7 @@
 | June 02 | [135. Candy](https://leetcode.com/problems/candy/) | Hard | Solved |
 | June 03 | [1298. Maximum Candies You Can Get from Boxes](https://leetcode.com/problems/maximum-candies-you-can-get-from-boxes/) | Hard | Solved |
 | June 04 | [3403. Find the Lexicographically Largest String From the Box I](https://leetcode.com/problems/find-the-lexicographically-largest-string-from-the-box-i/) | Medium | Solved |
-| June 05 | []() |  |  |
+| June 05 | [](1061. Lexicographically Smallest Equivalent String) | Medium | Unsolved |
 | June 06 | []() |  |  |
 | June 07 | []() |  |  |
 | June 08 | []() |  |  |
@@ -40,5 +40,5 @@
 | Level  | Problems | Solved | Unsolved |
 | ---    | --- | --- | --- |
 | Easy   | 0 | 0 | 0 |
-| Medium | 2 | 1 | 1 |
+| Medium | 3 | 1 | 2 |
 | Hard   | 2 | 2 | 0 |