_1630.java

packagecom.fishercoder.solutions.secondthousand;

importjava.util.ArrayList;
importjava.util.Collections;
importjava.util.List;

publicclass_1630 {
publicstaticclassSolution1 {
publicList<Boolean> checkArithmeticSubarrays(int[] nums, int[] l, int[] r) {
List<Boolean> result = newArrayList<>();
for (inti = 0; i < l.length; i++) {
if (isArithmetic(nums, l[i], r[i])) {
result.add(true);
 } else {
result.add(false);
 }
 }
returnresult;
 }

privatebooleanisArithmetic(int[] nums, intstart, intend) {
List<Integer> list = newArrayList<>();
for (inti = start; i <= end; i++) {
list.add(nums[i]);
 }
Collections.sort(list);
for (inti = 1; i < list.size(); i++) {
if (list.get(i) - list.get(i - 1) != list.get(1) - list.get(0)) {
returnfalse;
 }
 }
returntrue;
 }
 }
}