Merge branch 'main' of https://github.com/tkzzzzzz6/Algorithm_beginner_learning_notes

Author: tkzzzzzz6

CppProperties.json

@@ -0,0 +1,6 @@
+class Solution {
+public:
+    bool isPowerOfTwo(int n) {
+        return n > 0 && (n & (n-1)) == 0;      
+    }
+};

leetcode/Study Plan/231. 2 的幂/1.cpp

@@ -0,0 +1,3 @@
+class Solution:
+    def isPowerOfTwo(self, n: int) -> bool:
+        return n > 0 and (n&(n-1) ) == 0

leetcode/Study Plan/231. 2 的幂/1.py

@@ -0,0 +1,6 @@
+class Solution {
+public:
+    int addDigits(int num) {
+        return num > 0 ? (num-1)%9 + 1 : 0;
+    }
+};

leetcode/Study Plan/231. 2 的幂/2.cpp

@@ -0,0 +1,3 @@
+class Solution:
+    def addDigits(self, num: int) -> int:
+        return (num-1) % 9 + 1 if num else 0