ARTS 第22周

package org.nocoder.leetcode.solution;

/**
 * 136. Single Number
 * Given a non-empty array of integers, every element appears twice except for one. Find that single one.
 *
 * Note:
 *
 * Your algorithm should have a linear runtime complexity. Could you implement it without using extra memory?
 *
 * Example 1:
 *
 * Input: [2,2,1]
 * Output: 1
 * Example 2:
 *
 * Input: [4,1,2,1,2]
 * Output: 4
 *
 * @author yangjinlong
 * @date 2018-12-06
 */
public class SingleNumber {
    public static int singleNumber(int[] nums) {
        int result = 0;
        for(int i : nums) {
            result ^= i;
        }
        return result;
    }

    public static void main(String[] args) {
        int[] arr1 = new int[]{2,2,1};
        int[] arr2 = new int[]{4,1,2,1,2};
        System.out.println(singleNumber(arr1));
        System.out.println(singleNumber(arr2));
    }
}

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>Camden.SR3</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

# 开启重试机制，默认是false
spring.cloud.loadbalancer.retry.enabled=true
# 对所有操作请求都进行重试
ribbon.OkToRetryOnAllOperations=true

# 开启重试机制，默认是false
spring.cloud.loadbalancer.retry.enabled=true

# 请求连接的超时时间
ribbon.ConnectTimeout=250

# 请求处理的超时时间，使用SimpleClientHttpRequestFactory时，不用配置
ribbon.ReadTimeout=1000

# 对所有操作请求都进行重试
ribbon.OkToRetryOnAllOperations=true

# 切换实例的重试次数，默认为1，可使用默认值
ribbon.MaxAutoRetriesNextServer=2

# 对当前实例的重试次数，默认为1，可使用默认值
ribbon.MaxAutoRetries=1

@Bean
    @LoadBalanced
    RestTemplate restTemplate() {
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout(250);
        RestTemplate restTemplate = new RestTemplate(factory);
        //自定义响应错误处理
        restTemplate.setErrorHandler(new LibraryResponseErrorHandler());
        return restTemplate;
    }