31 may

Author: YuriSpiridonov

Challenges/2021/May-LeetCoding-Challenge.md

@@ -59,6 +59,7 @@ None
 | ----: | --- | --- | --- |
 |52.|[N-Queens II](https://leetcode.com/problems/n-queens-ii/)|~~Python~~|Hard|
 |164.|[Maximum Gap](https://leetcode.com/problems/maximum-gap/)|[Python](/Hard/164.MaximumGap.py)|Hard|
+|1268.|[Search Suggestions System](https://leetcode.com/problems/search-suggestions-system/)|[Python](/Medium/1268.SearchSuggestionsSystem.py)|Medium|
 
 ## License
 The code is open-source and licensed under the [MIT License](/LICENSE).

Medium/1268.SearchSuggestionsSystem.py

@@ -0,0 +1,86 @@
+'''
+    Given an array of strings products and a string searchWord. 
+    We want to design a system that suggests at most three 
+    product names from products after each character of 
+    searchWord is typed. Suggested products should have common 
+    prefix with the searchWord. If there are more than three 
+    products with a common prefix return the three 
+    lexicographically minimums products.
+
+    Return list of lists of the suggested products after each 
+    character of searchWord is typed. 
+
+    Example:
+    Input: products = ["mobile","mouse","moneypot","monitor","mousepad"], 
+           searchWord = "mouse"
+    Output: [
+            ["mobile","moneypot","monitor"],
+            ["mobile","moneypot","monitor"],
+            ["mouse","mousepad"],
+            ["mouse","mousepad"],
+            ["mouse","mousepad"]
+            ]
+    Explanation: products sorted lexicographically = 
+                 ["mobile","moneypot","monitor","mouse","mousepad"]
+                 After typing m and mo all products match and 
+                 we show user ["mobile","moneypot","monitor"]
+                 After typing mou, mous and mouse the system 
+                 suggests ["mouse","mousepad"]
+
+    Example:
+    Input: products = ["havana"], 
+           searchWord = "havana"
+    Output: [
+            ["havana"],
+            ["havana"],
+            ["havana"],
+            ["havana"],
+            ["havana"],
+            ["havana"]
+            ]
+
+    Example:
+    Input: products = ["bags","baggage","banner","box","cloths"], 
+           searchWord = "bags"
+    Output: [
+            ["baggage","bags","banner"],
+            ["baggage","bags","banner"],
+            ["baggage","bags"],["bags"]
+            ]
+
+    Example:
+    Input: products = ["havana"], 
+           searchWord = "tatiana"
+    Output: [[],[],[],[],[],[],[]]
+
+    Constraints:
+        - 1 <= products.length <= 1000
+        - There are no repeated elements in products.
+        - 1 <= Σ products[i].length <= 2 * 10^4
+        - All characters of products[i] are lower-case 
+          English letters.
+        - 1 <= searchWord.length <= 1000
+        - All characters of searchWord are lower-case 
+          English letters.
+'''
+#Difficulty: Medium
+#41 / 41 test cases passed.
+#Runtime: 628 ms
+#Memory Usage: 17 MB
+
+#Runtime: 628 ms, faster than 19.59% of Python3 online submissions for Search Suggestions System.
+#Memory Usage: 17 MB, less than 89.61% of Python3 online submissions for Search Suggestions System.
+
+class Solution:
+    def suggestedProducts(self, products: List[str], searchWord: str) -> List[List[str]]:
+        products.sort()
+        result = []
+        for i in range(1, len(searchWord)+1):
+            temp = []
+            for word in products:
+                if word.startswith(searchWord[:i]):
+                    temp.append(word)
+                if 3 == len(temp):
+                    break
+            result.append(temp)
+        return result

README.md

@@ -1,6 +1,6 @@
 # Python solutions of LeetCode problems.
 ![Language](https://img.shields.io/badge/language-Python-blue.svg) 
-![Problems Solved](https://img.shields.io/badge/problems%20solved-553%2F1665-orange) 
+![Problems Solved](https://img.shields.io/badge/problems%20solved-554%2F1665-orange) 
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](./LICENSE) 
 ![Update](https://img.shields.io/badge/update-Daily-brightgreen.svg) 
 <br><br>
@@ -23,7 +23,7 @@ In this repository provided my Python solutions of LeetCode problems.
 - [February LeetCoding Challenge](/Challenges/2021/February-LeetCoding-Challenge.md) - 23/28
 - [March LeetCoding Challenge](/Challenges/2021/March-LeetCoding-Challenge.md) - 23/31
 - [April LeetCoding Challenge](/Challenges/2021/April-LeetCoding-Challenge.md) - 23/30
-- [May LeetCoding Challenge](/Challenges/2021/May-LeetCoding-Challenge.md) - 16/31
+- [May LeetCoding Challenge](/Challenges/2021/May-LeetCoding-Challenge.md) - 17/31
 <br><br>
 ## Solutions
 *P.S. If you like this, please leave me a star.* ★
@@ -439,6 +439,7 @@ In this repository provided my Python solutions of LeetCode problems.
 |1260.|[Shift 2D Grid](https://leetcode.com/problems/shift-2d-grid/)|[Python](/Easy/1260.Shift2DGrid.py)|Easy|`array`|
 |1261.|[Find Elements in a Contaminated Binary Tree](https://leetcode.com/problems/find-elements-in-a-contaminated-binary-tree/)|[Python](/Medium/1261.FindElementsinaContaminatedBinaryTree.py)|Medium|`DFS`, iteratively|
 |1266.|[Minimum Time Visiting All Points](https://leetcode.com/problems/minimum-time-visiting-all-points/)|[Python](/Easy/1266.MinimumTimeVisitingAllPoints.py)|Easy|simple counter|
+|1268.|[Search Suggestions System](https://leetcode.com/problems/search-suggestions-system/)|[Python](/Medium/1268.SearchSuggestionsSystem.py)|Medium|Brute Force|
 |1282.|[Group the People Given the Group Size They Belong To](https://leetcode.com/problems/group-the-people-given-the-group-size-they-belong-to/)|[Python](/Medium/1282.GroupthePeopleGiventheGroupSizeTheyBelongTo.py)|Medium||
 |1283.|[Find the Smallest Divisor Given a Threshold](https://leetcode.com/problems/find-the-smallest-divisor-given-a-threshold/)|[Python](/Medium/1283.FindtheSmallestDivisorGivenaThreshold.py)|Medium|`Binary Search`|
 |1286.|[Iterator for Combination](https://leetcode.com/problems/iterator-for-combination/)|[Python](/Medium/1286.IteratorforCombination.py)|Medium|`Itertools`|