Selected Java API's


To reverse an array: Array name "nums", Method "zeroFront"

public int[] zeroFront(int[] nums) {
     int left  = 0;       
     int right = nums.length-1; 
        while ( left < right ) {
            int temp = nums[left]; 
            nums[left]  = nums[right]; 
            nums[right] = temp;
    return nums;

Printing an Array

Using Method "printArray"

import java.util.Arrays;
// class and main method header goes here

Timing your Array

In milliseconds:
Put in your main method:

long start = System.currentTimeMillis();
System.out.print(System.currentTimeMillis() - start);
insert the code here

Sorting Array

Before the main method:

 import java.util.arrays;

In the main method:

Arrays.sort( nums );

More to come…

More to come…

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