在Golang中分别访问数组元素

Question

I know this is very basic but i want to know how to access elements individually,the values of Sourceposition and currentarray keep changing, this operation is apart of recursive function.

For example:

 var Sourceposition int

var currentarray [8]int

for j:=0;j<len(currentarray);j++
{
  if currentarray[j]==0{
  Sourceposition = currentarray[j+1]}
fmt.Pritnln(Sourceposition)
}

//random statements

this gives me a error index out of range, Can someone help me , how to this calculation.

Answer 1

On your last iteration (when j == len(currentarray) - 1 which is 7) you're accessing currentarray[7] and then if that equals zero trying to access currentarray[8] which is out of range for [8]int.

The fix depends on the intended behaviour, it might be that you need to fix your loop invariant to be j < len(currentarray) - 1, or, if you want to treat your array in a circular way, you may want to do Sourceposition = currentarray[(j + 1) % len(currentarray)].