Question

我希望从下面的代码中获得此输出，但总是出现问题：

XX0 0.503
XX1 0.4
XX2 0.2
XX3 0.303
XX4 0.4
XX5 0.002

    String[] sarray  = new String[]{"XX0", "XX0", "XX0", "XX0", "XX1", "XX2", "XX3", "XX3", "XX3", "XX4", "XX5"};
    double [] amount  = new double[]{0.2, 0.001, 0.002, 0.4, 0.2, 0.001, 0.3, 0.002, 0.4, 0.002, 0.002};

    String s;
    double x=amount[0];
    try{
    for(int i=0;i< sarray.length;i++){
        s = sarray[i];
        while(sarray[i+1].equals(s)){
            amount[i]=amount[i]+amount[i+1];
            sarray[i+1]= "";
            amount[i+1]=0;
            s = sarray[i+1];
        }
    }

    }catch(Exception ex){}

     for(int i=0;i< sarray.length;i++){
         System.out.println(sarray[i]+"  "+amount[i]);
     }
}

此代码有什么问题？

Answer 1

根据我的理解，您正在尝试添加sarray和amount数组的相应值。因此，XX0应该等于0.2 + 0.001 + 0.002 + 0.4 = 0.603而不是0.503。

假设是这种情况，您可以尝试以下代码：< / p>

String [] sarray = new String [] {“XX0”，“XX0”，“XX0”，“XX0”，“XX1”，“XX2”，“XX3”，“XX3”，“XX3”，“ XX4“，”XX5“};
double [] amount = new double [] {0.2,0.001,0.002,0.4,0.2,0.001,0.3,0.002,0.4,0.002,0.002};

double x=amount[0];
int i;
try{
for(i=1;i<sarray.length;i++){
    if(sarray[i-1].equals(sarray[i])){
        x += amount[i];
    }
    else {
        System.out.println(sarray[i-1]+"  "+x);
        x = amount[i];
    }
}
System.out.println(sarray[i-1]+"  "+x);
}catch(Exception ex){}

注意：这不会像您一样编辑数组，而是提供所需的输出。

从数组中删除重复项并添加其他数组的元素

1 个答案: