How to find the largest difference in change in an array? - java -

suppose declare array:

int[] arr = {10,2,7,11,3}; 

the largest (positive) change in array 9 11 - 2 = 9.

how write method find largest change in code smaller integer occurring earlier?

thank you,

i rewrote answer since misunderstood question.

the simplest not efficient way check every change , comparing previous one. if bigger, discard previous 1 , remember 1 instead.

int change = arr[1] - arr[0]; //give initial value, if find bigger change replace for(int = 0; < arr.length - 1; i++) {     for(int j = + 1; < arr.length; j++) {         if(arr[j]-arr[i] > change) {             change = arr[j]-arr[i];         }     } } 

this still give answer if there no positive changes. if not want that, can modify it. trivial.

keep in mind arr.length - 1 important in outer loop.