Update .gitignore

.gitignore

@@ -1,6 +1,7 @@
 <<<<<<< HEAD
 ### IntelliJ IDEA ###
 out/
+/target/
 !**/src/main/**/out/
 !**/src/test/**/out/
 

pom.xml

@@ -19,4 +19,19 @@
             <scope>test</scope>
         </dependency>
     </dependencies>
+    <build>
+        <pluginManagement>
+            <plugins>
+                <plugin>
+                    <groupId>org.apache.maven.plugins</groupId>
+                    <artifactId>maven-compiler-plugin</artifactId>
+                    <version>3.8.1</version>
+                    <configuration>
+                        <source>1.8</source>
+                        <target>1.8</target>
+                    </configuration>
+                </plugin>
+            </plugins>
+        </pluginManagement>
+    </build>
 </project>

src/main/java/com/nbee/solution/practice/BinarySearch.java

@@ -4,17 +4,16 @@ class BinarySearch {
     public static int binarySearchBasic(int[] nums, int target){
         int i = 0 ,j = nums.length - 1;//设置指针和初始值
         while (i <= j){
-            int mid = ((i + j) / 2);
-            if (target == nums[mid]){
-                return mid;
+            int m = ((i + j) / 2);
+            if (target < nums[m]){
+               j = m - 1;
             }
-            else if (target < nums[mid]){
-                j = mid - 1;
+            else if (nums[m] < target){
+                i = m + 1;
             }
             else {
-                j = mid + 1;
+                return m;
             }
-            return mid;
         }
         return -1;
     }