diff --git a/190524/sony/Lv2_H-index.py b/190524/sony/Lv2_H-index.py
new file mode 100644
index 0000000..c1f8f2a
--- /dev/null
+++ b/190524/sony/Lv2_H-index.py
@@ -0,0 +1,22 @@
+def h_index(citations):
+    citations.sort(reverse=True)
+    count = 0
+    for i in range(len(citations)):
+        count +=1
+        if citations[i] <= count:
+            if citations[i] == count:
+                return citations[i]
+            if citations[i-1] >= count-1:
+                return count-1
+    return len(citations)
+
+
+## 다른 사람 풀이
+def solution(citations):
+    citations = sorted(citations)
+    l = len(citations)
+    for i in range(l):
+        if citations[i] >= l-i:
+            return l-i
+    return 0
+
diff --git a/190527/sony/exam.py b/190527/sony/exam.py
new file mode 100644
index 0000000..d5b5b4c
--- /dev/null
+++ b/190527/sony/exam.py
@@ -0,0 +1,25 @@
+def solution(answers):
+    s1 = [1,2,3,4,5]  # cycle : 5
+    s2 = [2,1,2,3,2,4,2,5]  # cycle : 8
+    s3 = [3,3,1,1,2,2,4,4,5,5]  # cycle : 10
+
+    a1 = 0
+    a2 = 0
+    a3 = 0
+
+    for i in range(len(answers)):
+        if(s1[i%len(s1)] == answers[i]):
+            a1 +=1
+        if(s2[i%len(s2)] == answers[i]):
+            a2 +=1
+        if(s3[i%len(s3)] == answers[i]):
+            a3 +=1
+
+    answer_list = [a1,a2,a3]
+    m = max(answer_list)
+    result = []
+    for i in range(len(answer_list)):
+        if m == answer_list[i]:
+            result.append(i+1)
+    return result
+