static int findMissingNumber(int start, int end, List<Integer> list) {
List<Integer> lists = new ArrayList<>();
for (int i=start;i<=end;i++){
lists.add(i);
}
for (Integer n : lists) {
if (list.contains(n)==false){
return n;
return 0;
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static int findMissingNumber(int start, int end, List<Integer> list) {
List<Integer> lists = new ArrayList<>();
for (int i=start;i<=end;i++){
lists.add(i);
}
for (Integer n : lists) {
if (list.contains(n)==false){
return n;
}
}
return 0;
}