package net.ukr.vladsemenov;

import java.util.Arrays;

public class Main {

    public static void main(String[] args) {
        int a[] = new int[] { 9, 4, 5, 76, 3, 21 };
        System.out.println(maxNumber(a));
    }

    static int maxNumber(int[] a) {
        int max = 0;
        for (int i = 0; i < a.length; i++) {
            if (a[i] > a[i += 1]) {
                max = a[i];
            } else {
                max = a[i += 1];
            }
        }

        return max;
    }
}

static int maxNumber(int[] a) {
    int max = a[0];
    for (int i = 1; i < a.length; i++) {
        if (a[i] > max) {
            max = a[i];
        }
    }

    return max;
}

for (int i = 0; i < a.length-1; i++) {
        if (a[i] > a[i + 1]) {
            max = a[i];
        } else {
            max = a[i + 1];
        }

public static void main(String[] args) {
    int a[] = new int[] { 9, 4, 5, 76, 3, 21 };
    System.out.println(maxNumber(a));
}

private static int maxNumber(int[] a) {
    int max = a[0];
    for (int i : a) {
        if (max < i) {
            max = i;
        }
    }
    return max;
}

int max = Arrays.stream(a).max().getAsInt();