题目:
题解:
class Solution {public int lengthOfLIS(int[] nums) {int len = 1, n = nums.length;if (n == 0) {return 0;}int[] d = new int[n + 1];d[len] = nums[0];for (int i = 1; i < n; ++i) {if (nums[i] > d[len]) {d[++len] = nums[i];} else {int l = 1, r = len, pos = 0; // 如果找不到说明所有的数都比 nums[i] 大,此时要更新 d[1],所以这里将 pos 设为 0while (l <= r) {int mid = (l + r) >> 1;if (d[mid] < nums[i]) {pos = mid;l = mid + 1;} else {r = mid - 1;}}d[pos + 1] = nums[i];}}return len;}
}