只要SUM不溢出就行了
static int findMissingNumber(int start, int end, List<Integer> list) {
int sum=(start+end)*(end-start+1)/2;
for (Integer integer : list) {
sum-=integer;
}
return sum;
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麦田 人海 红旗
只要SUM不溢出就行了
static int findMissingNumber(int start, int end, List<Integer> list) {
int sum=(start+end)*(end-start+1)/2;
for (Integer integer : list) {
sum-=integer;
}
return sum;
}