Finds the maximum of an array of integers. - Java Collection Framework

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Description

Finds the maximum of an array of integers.

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        int[] array = new int[] { 34, 35, 36, 37, 37, 37, 67, 68, 69 };
        System.out.println(max(array));
    }//from  w w  w.j  a v a  2  s .co  m

    /**
     * Finds the maximum of an array of integers.
     *
     * @param array   Array of integers
     * @return   Maximum value from the array
     */
    public static int max(int[] array) {
        int maximum = Integer.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (maximum < array[i]) {
                maximum = array[i];
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum of an array of doubles.
     *
     * @param array   Array of doubles
     * @return   Maximum value from the array
     */
    public static double max(double[] array) {
        double maximum = Double.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (maximum < array[i]) {
                maximum = array[i];
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum of an array of longs.
     *
     * @param array   Array of longs
     * @return   Maximum value from the array
     */
    public static long max(long[] array) {
        long maximum = Long.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (maximum < array[i]) {
                maximum = array[i];
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum of an array of floats.
     *
     * @param array   Array of floats
     * @return   Maximum value from the array
     */
    public static float max(float[] array) {
        float maximum = Float.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (maximum < array[i]) {
                maximum = array[i];
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum of an array of bytes.
     *
     * @param array   Array of bytes
     * @return   Maximum value from the array
     */
    public static byte max(byte[] array) {
        byte maximum = Byte.MIN_VALUE;
        for (int i = 0; i < array.length; i++) {
            if (maximum < array[i]) {
                maximum = array[i];
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum value of a matrix of integers.
     *
     * @param matrix Matrix of integers.
     * @return Maximum value in the matrix.
     */
    public static int max(int[][] matrix) {
        int maximum = Integer.MIN_VALUE;
        for (int[] column : matrix) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (maximum < column[j]) {
                    maximum = column[j];
                }
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum value of a matrix of doubles.
     *
     * @param matrix Matrix of doubles.
     * @return Maximum value in the matrix.
     */
    public static double max(double[][] matrix) {
        double maximum = Double.MIN_VALUE;
        for (double[] column : matrix) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (maximum < column[j]) {
                    maximum = column[j];
                }
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum value of a matrix of longs.
     *
     * @param matrix Matrix of longs.
     * @return Maximum value in the matrix.
     */
    public static long max(long[][] matrix) {
        long maximum = Long.MIN_VALUE;
        for (long[] column : matrix) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (maximum < column[j]) {
                    maximum = column[j];
                }
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum value of a matrix of floats.
     *
     * @param matrix Matrix of floats.
     * @return Maximum value in the matrix.
     */
    public static float max(float[][] matrix) {
        float maximum = Float.MIN_VALUE;
        for (float[] column : matrix) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (maximum < column[j]) {
                    maximum = column[j];
                }
            }
        }
        return maximum;
    }

    /**
     * Finds the maximum value of a matrix of bytes.
     *
     * @param matrix Matrix of bytes.
     * @return Maximum value in the matrix.
     */
    public static byte max(byte[][] matrix) {
        byte maximum = Byte.MIN_VALUE;
        for (byte[] column : matrix) {
            for (int j = 0; j < matrix[0].length; j++) {
                if (maximum < column[j]) {
                    maximum = column[j];
                }
            }
        }
        return maximum;
    }
}

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