贝壳笔试...我怕是有毒
本地IDE测试都跑了...提交0AC,写的测试用例输出为空...用不明白的在线编辑器
public static void main(String args[]){
// Scanner n = new Scanner(System.in);
Scanner firstInt = new Scanner(System.in);
Scanner in = new Scanner(System.in);
int n = firstInt.nextInt();
if (n == 0) {
System.out.println(0);
}
else if (n == 1){
int[] b = new int[n];
for (int i = 0; i < b.length; i++) {
b[i] = in.nextInt();
}
System.out.println(b[0]);
}
else {
int[] b = new int[n];
for (int i = 0; i < b.length; i++) {
b[i] = in.nextInt();
}
int first = 0;
int scond = 0;
int temp = 10000;
int a = 0;
for (int i = 1; i < b.length; i++) {
int firstnum = b[i-1];
int scondnum = b[i];
a = Math.abs(firstnum - scondnum);
if(a < temp){
temp = a;
first = i-1;
scond = i;
}
// if (a <= temp){
//
// }
}
System.out.println(b[first] +" " + b[scond]);
}} public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
//arr数组表示输入的序列
int[] arr = new int[11111];
//longest数组中存放上升序列的长度,longest[i]表示以arr[i]结尾的子序列的最大长度
int[] longest = new int[11111];
for (int i = 1; i <= n; i++) {
int a = sc.nextInt();
arr[i] = a;
}
int result = -1;
for (int i = 1; i <= n; i++) {
longest[i] = 1;
for (int j = 1; j < i; j++) {
if (arr[i] > arr[j] && (longest[j] + 1 > longest[i])) {
longest[i] = longest[j] + 1;
}
}
result = Math.max(result, longest[i]);
}
System.out.println(result);
} public static void main(String args[]){
Scanner firstInt = new Scanner(System.in);
Scanner in = new Scanner(System.in);
int n = firstInt.nextInt();
int[] array = new int[n];
for (int i = 0; i < array.length; i++) {
array[i] = in.nextInt();
}
//int[] array = {1,1,1,1,1};
int count = 0;
for (int i = 0; i < array.length; i++) {
for (int j = i; j < array.length - 1; j++) {
if (array[i] > array[j]){
if (array[i] * 0.9 <= array[j])
{
count++;
}
}
if (array[i] < array[j]){
if (array[i] >= array[j]* 0.9)
{
count++;
}
}
if (array[i] == array[j]){
count++;
}
}
}
System.out.println(count);
}
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