How to get words average length using Lambda Expression

Question

I have a word list text file, I want to get min, max and average word lengths from that file.

I have a stream method:

public static Stream

        

Answer 1

Use IntSummaryStatistics to get the min, max and average in one pass.

IntSummaryStatistics summary = readWords(filename)
    .collect(Collectors.summarizingInt(String::length));
System.out.format("min = %d, max = %d, average = %.2f%n",
    summary.getMin(), summary.getMax(), summary.getAverage());