Arrays

package com.evs.objava33.class4;

import java.util.Arrays;

public class TestArray {

public static void main(String[] args) {
// int a, b, c, d, e, f, g, h, i, j;

// 1.
int[] primes; // declare
primes = new int[10]; // initialize
primes[0] = 10; // assign

// 2.
int[] prim1 = new int[5]; // declare + initialize
prim1[0] = 10;

for (int i = 0; i < prim1.length; i++) {
prim1[i] = 10;
}
Arrays.fill(prim1, 10);

// 3.
int[] prim = { 2, 3, 5, 7, 11, 13, 17 };
prim = new int[] { 2, 3, 5, 7 };

int val = 0;
for (int i = 0; i < prim.length; i++) {
val = prim[i];
System.out.println(val);
}

// for each
for (int value : prim) {
System.out.println(value);
}

float[][] temp;
temp = new float[10][20];
temp = new float[10][];

for (int i = 0; i < temp.length; i++) {
temp[i] = new float[i * 2 + 1];
}

for (float[] f : temp) {
for (float f1 : f) {
System.out.println(f1);
}
}

temp = new float[][] { { 1, 3 }, { 2, 8, 9, 6, 5 }, { 2, 3, 4, 5 } };

}
}