数组连续和
标题:数组连续和 | 时间限制:1秒 | 内存限制:65536K | 语言限制:不限
给定一个含有N个正整数的数组, 求出有多少个连续区间(包括单个正整数), 它们的和大于等于x。
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); while(sc.hasNextLine()) { String[] params = sc.nextLine().trim().split(" "); int numCount = Integer.parseInt(params[0]); int finalNumber = Integer.parseInt(params[1]); String[] numstrArray2 = sc.nextLine().trim().split(" "); int[] numArr = new int[numCount]; for (int i = 0; i < numCount; i++) { numArr[i] = Integer.parseInt(numstrArray2[i]); } long sum = 0; long count = 0; int j = 0; for (int i = 0; i < numCount; i++) { sum += numArr[i]; while(sum >= finalNumber && j <= i) { count += numCount - i; sum -= numArr[j]; j++; } } System.out.println(count); } sc.close(); } }