Add solution and test-cases for problem 3527

leetcode/3501-3600/3527.Find-the-Most-Common-Response/README.md

@@ -1,28 +1,37 @@
 # [3527.Find the Most Common Response][title]
 
-> [!WARNING|style:flat]
-> This question is temporarily unanswered if you have good ideas. Welcome to [Create Pull Request PR](https://github.com/kylesliu/awesome-golang-algorithm)
-
 ## Description
+You are given a 2D string array `responses` where each `responses[i]` is an array of strings representing survey responses from the `ith` day.
+
+Return the **most common** response across all days after removing **duplicate** responses within each `responses[i]`. If there is a tie, return the lexicographically smallest response.
 
 **Example 1:**
 
 ```
-Input: a = "11", b = "1"
-Output: "100"
-```
+Input: responses = [["good","ok","good","ok"],["ok","bad","good","ok","ok"],["good"],["bad"]]
 
-## 题意
-> ...
+Output: "good"
 
-## 题解
+Explanation:
 
-### 思路1
-> ...
-Find the Most Common Response
-```go
+After removing duplicates within each list, responses = [["good", "ok"], ["ok", "bad", "good"], ["good"], ["bad"]].
+"good" appears 3 times, "ok" appears 2 times, and "bad" appears 2 times.
+Return "good" because it has the highest frequency.
 ```
 
+**Example 2:**
+
+```
+Input: responses = [["good","ok","good"],["ok","bad"],["bad","notsure"],["great","good"]]
+
+Output: "bad"
+
+Explanation:
+
+After removing duplicates within each list we have responses = [["good", "ok"], ["ok", "bad"], ["bad", "notsure"], ["great", "good"]].
+"bad", "good", and "ok" each occur 2 times.
+The output is "bad" because it is the lexicographically smallest amongst the words with the highest frequency.
+```
 
 ## 结语
 

leetcode/3501-3600/3527.Find-the-Most-Common-Response/Solution.go

@@ -1,5 +1,31 @@
 package Solution
 
-func Solution(x bool) bool {
-	return x
+func Solution(responses [][]string) string {
+	store := make(map[string]int)
+	for _, resp := range responses {
+		cur := make(map[string]struct{})
+		for _, str := range resp {
+			cur[str] = struct{}{}
+		}
+		for key := range cur {
+			store[key]++
+		}
+	}
+	var (
+		ret string
+		cnt int
+	)
+	for key, count := range store {
+		if count > cnt {
+			ret = key
+			cnt = count
+			continue
+		}
+
+		if count == cnt {
+			ret = min(ret, key)
+		}
+	}
+
+	return ret
 }

leetcode/3501-3600/3527.Find-the-Most-Common-Response/Solution_test.go

@@ -10,12 +10,11 @@ func TestSolution(t *testing.T) {
 	//	测试用例
 	cases := []struct {
 		name   string
-		inputs bool
-		expect bool
+		inputs [][]string
+		expect string
 	}{
-		{"TestCase", true, true},
-		{"TestCase", true, true},
-		{"TestCase", false, false},
+		{"TestCase1", [][]string{{"good", "ok", "good", "ok"}, {"ok", "bad", "good", "ok", "ok"}, {"good"}, {"bad"}}, "good"},
+		{"TestCase2", [][]string{{"good", "ok", "good"}, {"ok", "bad"}, {"bad", "notsure"}, {"great", "good"}}, "bad"},
 	}
 
 	//	开始测试
@@ -30,10 +29,10 @@ func TestSolution(t *testing.T) {
 	}
 }
 
-//	压力测试
+// 压力测试
 func BenchmarkSolution(b *testing.B) {
 }
 
-//	使用案列
+// 使用案列
 func ExampleSolution() {
 }