int[]a = new int[s . length()]；

for(int I = 0； I & lts.length (). i++)

{

//Convert the String into char, then into string, and then into Integer.

a[I]= integer . parse int(string . value of(s . charat(I)))；

}

//The data in the string must be numbers, otherwise an exception will occur.

s . charat(I)； Get the position value of the string I,

string . value of()； Convert a character type to a string.

integer . parse int()； Convert from string to integer