Nick Heiner Nick Heiner - 1 year ago 71
Java Question

Finding the max/min value in an array of primitives using Java

It's trivial to write a function to determine the min/max value in an array, such as:

* @param chars
* @return the max value in the array of chars
private static int maxValue(char[] chars) {
int max = chars[0];
for (int ktr = 0; ktr < chars.length; ktr++) {
if (chars[ktr] > max) {
max = chars[ktr];
return max;

but isn't this already done somewhere?

Answer Source

Using Commons Lang (to convert) + Collections (to min/max)

import java.util.Arrays;
import java.util.Collections;

import org.apache.commons.lang.ArrayUtils;

public class MinMaxValue {

    public static void main(String[] args) {
        char[] a = {'3', '5', '1', '4', '2'};

        List b = Arrays.asList(ArrayUtils.toObject(a));


Note that Arrays.asList() wraps the underlying array, so it should not be too memory intensive and it should not perform a copy on the elements of the array.

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