为什么输出结果a[1]的值为7？代码如下。

Question

public class E {

public static void main(String[] args) {

int [] a={10,20,30,40},b[]={{1,2},{4,5,6,7}};

b[0]=a;

b[0][1]=b[1][3];

System.out.println(b[0][3]);

System.out.println(a[1]);

}

}

Answer 1

GYXXUFWEZFANQFJKLTCQQNGBTQUKPPPMHFYTSXDDBCAHLEQQXQSQBMNIVFLBTIMZLVVBMNCZFTAXNOGRZDVSOIMKSMRAGDJJNYTSNKKKLUSZOUVTJOMULXADJJRFQOTFXENBGHODCDCMAEJHRMWTOCGLHUMZGMDPAVMREKUITNSIDDAKRMRIGLLBVMEIGUNTWWQYGEEWMUUZUFIWOFVXSAEJATBLBPDSQAZFIIWGNICRZSCALTDPCFPZXHQMFKFMCQBGSSHMMCGESNRKOSFCODOZBYCFVQIQIYMMFGHVKWEBYIBIGOXIBOGNIOJMRAGCYFFJUOUUTAKBSEFOUAAAEEMAQANKOFMMROJTKMNFYDJZZDOTHZROIESNLTXVSCJQOTKHKOLHPKZHETZGZUKIFOZZZGLQDRGSLLEZQIYRMCMTLPUYXCXRRFALJAFFEYJRFNTPJAMVMUOOAWWTXVPUVQUYPNKZDDSFFBBJARSKKXXIKRCAFZPXIMKFNUOBNDBZUHGSVKSBWAMEOHEPNBINSMVIDKYJENAATVDQHOWGJKVHFZFAJQDRJQVPANUXEZGEDVLEDICQBYTGCPTBWAZEKQAHSGLOAEUXCNEAYNDAYJLSGIGDZSNOZJEIRRANRFMEVIIRFZCMPVYIYJAYAHSHNGQHSSHLBRGRLTDXFKKWJNAGEGPUCDAXIHPBBHLSIKHBENNFIIVLZFGFDDUOPKDFOIMKHXMEULMNRGRDGZYZDBJDILXUUMKKUTPDDPTLFPXENDCBWXYNDVINEGUQFVVMKCAYITQKWYFFJPILRBGUSVPRUURFGIFTAQQNLSXRVURYMQLHLEATHEHFDITLSGIKRCKENDQKLGKEUJKGTAZASTYFFRZSKGBJWTZHQBGBTTJDRSAIWILVVTEMUTEWGITTKRTQDWFWURBMXNHMXRAEUKMSOISTGFHTZIISNRCXDSGHESYOMCLAHEIZOWYXBPTUFVLLQGNDNEJBPSBOIFFXSBDWNXIORSYHNXEEHHCTZVSPZAEZYEGRUBPYJMBRLZTGSASIOPXRVTESLBPPNNSQJCXYMZNDCHXTNETTZKCLXEWGGYUANMGXXYNREMZGWGNLWSLKKXYSADVIIZYISJEBKBRFMKYZWJWAIPXAPFVIGEZKWLLSIPNFDIRQNMFPAUZDDGPANSYLTPUTGRCDUGGLLYFTELMPYEKEFMYTMSKBLTLJOVVVWUVDSKJYOSZHZKJVOAEIZQPKGQREPSGTEELBPPQKKZRHGHHYOQUEDYICGHYGVIBBBZPTPLVFWMNSGSVDDRZNHNRLIVDKIZAPLSZDBFUXTZWIWBWKRMZGWQVGYFSYOLDRJYSDKGNOMQALVVMTJYYIGYOYIIUYYWBGPMGTRWKYENXXOICDSBUJFGQKBWMBXUERLWLRAGOFJFACERAAUBGYTIFJOLSZGVBXDNAYICWWSRLYUBNVEKNXXISNYEQTUCWNOSYXTUEOZDGMLORSCTXMWSWKVQVVLISSWHYMGUJFZNBJXTODJXSQEWRWWWLAYDRVGNNNOFPKUQMMGHVXYRJMDXFTLFSHARRGKSOTPUKKFMKOXWEQRCQYURMWWSAGLSTYYIIGEKSRGNQMRZNB

Answer 2

数组b调用了数组a的地址，所以在数组b中的变化会影响到a的值，b,0.1指向a的地址1，b.1.3的值是7所以赋值过去之后b.0.1 和a1地址中的内容都被改为7了。所以输出为z 纯手打，还是用手机，你就采纳我的回答吧，有问题我等下继续回答你。