Create Solution2.java

Author: daiderong

solution/0041.First Missing Positive/Solution2.java

@@ -0,0 +1,19 @@
+public class Solution2 {
+
+   /**
+     * 从misNum=1开始假设不存在，循环一遍数组，如果存在则misNum++即可
+     * 
+     * @param arrs
+     * @return
+     */
+    private static int findMissFirstNum(int [] arrs){
+        int misNum = 1;
+        for(int i:arrs){
+            if(i==misNum){
+                misNum++;
+            }
+        }
+        return misNum;
+    }
+
+}