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