Objective-C-省份城市地区（17-08-02）Mine

//
//  main.m
//  yan1
//
//  Created by lanou3g on 17/8/2.
//  Copyright © 2017年 lanou3g. All rights reserved.
//

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
    
    //创建省份数组
    NSMutableArray *provinceArray = [NSMutableArray array];
    //加载文件得到字符串
    NSString *contentString = [NSString stringWithContentsOfFile:@"/Users/lanou3g/Downloads/area.txt" encoding:NSUTF8StringEncoding error:nil];
    //用\n分割字符串，得到每一行的字符串内容
    NSArray * lineArray = [contentString componentsSeparatedByString:@"\n"];
    for (NSString *lineString in lineArray) {
        if (![lineString hasPrefix:@" "]) { //前缀不是空格的话，找省份名
        //创建省份字典 provinceDic＝｛@“provinceName”：@“北京” ， @“cityArray”：@“[各个城市]”｝
            NSMutableDictionary *provinceDic = [NSMutableDictionary dictionary];
            [provinceDic setObject:lineString forKey:@"provinceName"];
            NSMutableArray *cityEvery = [NSMutableArray array];
            [provinceDic setObject:cityEvery forKey:@"cityArray"];
            [provinceArray addObject:provinceDic];
        }else if(![lineString hasPrefix:@"    "]) { //找城市
            NSMutableDictionary *provinceDic = [provinceArray lastObject];
            NSMutableArray *cityEvery = [provinceDic objectForKey:@"cityArray"];
            NSMutableDictionary *cityDic = [NSMutableDictionary dictionary];
            [cityDic setObject:lineString forKey:@"cityName"];
            NSMutableArray *areaEvery = [NSMutableArray array];
            [cityDic setObject:areaEvery forKey:@"areaArray"];
            [cityEvery addObject:cityDic];
        }else {//找地区
            //获取当前地区所属的省份
            NSMutableDictionary *provinceDic = [provinceArray lastObject];
            //获取该省份的城市数组
            NSMutableArray *cityEvery = [provinceDic objectForKey:@"cityArray"];
            //从城市数组中取出当前地区所属的城市
            NSMutableDictionary *cityDic = [cityEvery lastObject];
            //获取该城市的地区数组
            NSMutableArray *areaEvery = [cityDic objectForKey:@"areaArray"];
            [areaEvery addObject:lineString];
            
        }
    }
    
    for (NSMutableDictionary *provinceDic in provinceArray) {
        NSLog(@"省份：%@",[provinceDic objectForKey:@"provinceName"]);
        for (NSMutableDictionary *cityDic in [provinceDic objectForKey:@"cityArray"]) {
            NSLog(@"%@",[cityDic objectForKey:@"cityName"]);
            for (NSString *areaName in [cityDic objectForKey:@"areaArray"]) {
                NSLog(@"%@",areaName);
            }
        }
    }
    
    return 0;
}