16 lines
383 B
Java
16 lines
383 B
Java
|
public static int[] countLetters(String filename) throws IOException{
|
||
|
|
int[] freqs = new int[26];
|
||
|
|
try(BufferedReader in = new BufferedReader(new FileReader(filename))){
|
||
|
|
String line;
|
||
|
|
while((line = in.readLine()) != null){
|
||
|
|
line = line.toUpperCase();
|
||
|
|
for(char ch:line.toCharArray()){
|
||
|
|
if(Character.isLetter(ch)){
|
||
|
|
freqs[ch - 'A']++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return freqs;
|
||
|
|
}
|