更改for循环内的索引 [英] change index inside a for loop

问题描述

我能够改变在Java的for循环内的索引？例如：

  for（int j = 0; j  if（ item ==）{
 result_array [j] =％; 
 result_array [j + 1] =2; 
 result_array [j + 2] =0; 
 j = j + 2; 
} 
 else result_array [j] = item; 
 
 
 
 
 
 
虽然在for循环中执行j ++，但是在for循环中，我我也在做j = j + 3。我能做到这一点吗？是的，你可以改变一个for循环内的索引，但它太混乱了。在这种情况下最好使用while循环。
  int j = 0; 
 while（j< result_array.length）{
 if（item.equals（））{
 result_array [j] =％; 
 result_array [j + 1] =2; 
 result_array [j + 2] =0; 
 j = j + 2; 
} else 
 result_array [j] = item; 
 j ++; 
} 
  
 
Am I able to change the index inside the for loop in java? For example:
for (int j = 0; j < result_array.length; j++){
            if (item==" ") {
                result_array[j] = "%";
                result_array[j+1] = "2";
                result_array[j+2] = "0";
                j = j+2;
            }
            else result_array[j] = item;
        }
Although it is doing j++ in the for loop, inside the for loop, i am also doing j = j + 3. Is it possible for me to achieve this? 
解决方案
Yes you can change index inside a for loop but it is too confusing. Better use a while loop in such case.
int j = 0;
while (j < result_array.length) {
    if (item.equals(" ")) {
        result_array[j] = "%";
        result_array[j + 1] = "2";
        result_array[j + 2] = "0";
        j = j + 2;
    } else
        result_array[j] = item;
    j++;
}


                        
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