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Author: assassint2017

Reach a Number/Reach_a_Number.cpp

@@ -0,0 +1,31 @@
+// 附参考链接
+// https://leetcode.com/problems/reach-a-number/discuss/112968/Short-JAVA-Solution-with-Explanation
+
+class Solution 
+{
+public:
+    int reachNumber(int target) 
+    {
+        target = target > 0 ? target : -target;
+        
+        int pos = 0;
+        int step = 1;
+        
+        while (pos + step < target)
+        {
+            pos += step;
+            ++step;
+        }
+        
+        if (pos + step == target) return step;
+        
+        int dis = step - (target - pos);
+        
+        if ((dis & 1) == 0)
+            return step;
+        else if((step + 1) & 1)
+            return step + 1;
+        else
+            return step + 2;
+    }
+};

Reach a Number/Reach_a_Number.py

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+class Solution:
+    def reachNumber(self, target: int) -> int:
+