1.  write a method to check to see if the elements in an int array are always increasing.

public static boolean arrayAcsending(int[] nums){
    boolean isAscending=true;

    in count=1;

    while(isAscending&&count<nums.length){
        if(nums[count]<nums[count-1]){
            isAscending=false;
        }
    }

    return isAscending;
}

2. reverse an array
public static void reverseArray(int [] nums){
/*SWAP!
  step 1: create a temp variable and store element at current index
  step 2: assign value from index length-i-1 into current index
  step 3: assign value from the temp variable into index length-i-1
*/
    for(int i=0; i<nums.length/2; i++){
        int temp=nums[i];
        nums[i]=nums[nums.length-i-1];
        num[nums.length-i-1]=temp;
    }
}

3. shuffle an array
public static void shuffleNums(int[] nums){

    for(int i=0; i<nums.length-1; i++){
        //get min and max for generating rand range
        int max=nums.length-1;
        int min=i;

        //generate rand
        int rand=(int)(Math.random()*(max-min+1))+min;

        //swap nums[i] with nums[rand]
        int temp=nums[rand];
        nums[rand]=nums[i];
        nums[i]=temp;
    }

}