如何在java中使用线性搜索？

里克·韦恩

如果我必须接受用户输入（即姓名），我有一组 [3][3] ID、姓名、城市，然后显示其他人的详细信息，如 id 和城市

public class Source {

    String customerDetails[][]=new String[5][3];

    Source() {
        customerDetails[0][0]="1001";
        customerDetails[0][1]="Nick";
        customerDetails[0][2]="Chicago";
    
        customerDetails[1][0]="1008";
        customerDetails[1][1]="James";
        customerDetails[1][0]="San Diego";
        
        customerDetails[2][0]="1002";
        customerDetails[2][1]="Tony";
        customerDetails[2][2]="New York";
        
        customerDetails[3][0]="1204";
        customerDetails[3][1]="Tom";
        customerDetails[3][2]="Houston";
        
        customerDetails[4][0]="1005";
        customerDetails[4][1]="Milly";
        customerDetails[4][2]="San Francisco";
    }

}

请建议我。我是java新手，谢谢！

施里杜特·科塔里

您需要遍历 2D 数组并需要匹配给定的用户名，数组中的每个名称，如果找到匹配项，您可以返回包含在自定义类中的用户详细信息

public List<Customer> findCustomersByName(String customerName) {
    int length = customerDetails.length;
    List<Customer> customersmatching = new ArrayList<>();

    for (int i = 0; i < length; i++) {
        if (customerName != null && customerName.equals(customerDetails[i][1])) {
            customersmatching.add(new Customer(customerDetails[i][0], customerDetails[i][1], customerDetails[i][2]));
        }
    }
    return customersmatching;
}

private static class Customer {
    String userId;
    String userName;
    String userCity;

    public Customer(String userId, String userName, String userCity) {
        this.userId = userId;
        this.userName = userName;
        this.userCity = userCity;
    }

    public String getUserId() {
        return userId;
    }

    public void setUserId(String userId) {
        this.userId = userId;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserCity() {
        return userCity;
    }

    public void setUserCity(String userCity) {
        this.userCity = userCity;
    }

}

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