array find min in java code example

Example 1: find min in array java

private static int findMin(int[] array) {
		int min = array[0];
		for(int i=1;i<array.length;i++) {
			if(min > array[i]) {
				min = array[i];
			}
		}
		return min;
	}

Example 2: java 8 find min value in array

package com.concerned.crossbill;

import java.util.Arrays;

public class Foo {

  public int getMin(int[] numbers) {
	return Arrays.stream(numbers).min().getAsInt();
  }
}
// test class
import org.junit.Test;
import static org.junit.Assert.assertEquals;
import com.concerned.crossbill.Foo;

public class FooTest { 
  public void testGetMin() {
    int[] numbers =  new int[]{12, 10, 31, 30, 23, 4, 5, 5, 5, 5, 10, 40};
    
    Foo foo = new Foo();
    int result  = foo.getMin(numbers);
    int expResult  = 4;
    
    assertEquals(expResult, result);
  }
}

Example 3: min array number in java

Integer[] num = { 2, 4, 7, 5, 9 };
        // using Collections.min() to find minimum element
        // using only 1 line.
        int min1 = Collections.min(Arrays.asList(num));

        // using Collections.max() to find maximum element
        // using only 1 line.
        int max1 = Collections.max(Arrays.asList(num));
        System.out.println(min1); // 2 
        System.out.println(max1); // 9