Find the smallest value in the parameter array, and find the largest value, and return the largest value minus the smallest value. If the array has length 0, return -1.

java

/*
* find the biggest and smallest 
*/
public int findRange(int[] intArray) {
    if(intArray.length == 0){     //check that the array is bigger than 0
        return -1;
    }
    int largest = intArray[0]; 
    int smallest = intArray[0];
    for (int x=1;x<intArray.length;x++){ // find the smallest
        if (intArray[x] < smallest){
            smallest = intArray[x];
        }
    }
    for (int i = 1;i<intArray.length;i++){ // find the largest number
        if (intArray[i] > largest){
            largest = intArray[i];
            }
        }
   
    return largest - smallest; //output the difference 

    }
}