2833. Furthest Point From Origin (<font color=#00B8A3>Easy</font>)
限制 :
1 <= moves.length == n <= 50
moves consists only of characters 'L', 'R' and '_'
Solution
就是簡單的計算哪邊數字大,相減之後再加上底線的數量即為答案。
時間複雜度: $O(n)$
davidchen0970 changed 6 months agoView mode Like Bookmark
tags: BiWeekly Contest
3330. Find the Original Typed String I (<font color=#00B8A3>Easy</font>)
限制 :
1 <= word.length <= 100
word consists only of lowercase English letters.
Solution
時間複雜度: $O(n)$
davidchen0970 changed 7 months agoView mode Like Bookmark
3318. Find X-Sum of All K-Long Subarrays I (<font color=#00B8A3>Easy</font>)
Solution
時間複雜度: O(n)
空間複雜度: O(1)
程式碼:
3319. K-th Largest Perfect Subtree Size in Binary Tree (<font color=#FFC011>Medium</font>)
Solution
時間複雜度:
空間複雜度:
davidchen0970 changed 8 months agoView mode Like Bookmark
3324. Find the Sequence of Strings Appeared on the Screen (<font color=#FFC011>Medium</font>)
Solution
暴力解,就這樣。
時間複雜度: $O(n^2)$
空間複雜度: $O(n^2)$
程式碼:
class Solution {
public:
davidchen0970 changed 8 months agoView mode Like Bookmark
3258. Count Substrings That Satisfy K-Constraint I (<font color=#00B8A3>Easy</font>)
限制 :
1 <= s.length <= 50
1 <= k <= s.length
s[i] is either '0' or '1'
Solution
這一題要做的事情是看有多少子序列是符合 0的數量<k 或 1的數量 < k
簡單解的話就是暴力解。
davidchen0970 changed 10 months agoView mode Like Bookmark
3254. Find the Power of K-Size Subarrays I (<font color=#00B8A3>Easy</font>)
限制 :
1 <= n == nums.length <= 500
1 <= nums[i] <= 105
1 <= k <= n
### Solution
時間複雜度: $O(n*k)$
空間複雜度: $O(n)$
davidchen0970 changed 10 months agoView mode Like Bookmark
3090. Maximum Length Substring With Two Occurrences (<font color=#00B8A3>Easy</font>)
限制 :
2 <= s.length <= 100
s consists only of lowercase English letters.
Solution
利用前後夾擊的方式算出最長的序列,有點類似 LCS ,但又不太像。
時間複雜度: $O(n^2)$
davidchen0970 changed 10 months agoView mode Like Bookmark
3083. Existence of a Substring in a String and Its Reverse (<font color=#00B8A3>Easy</font>)
限制 :
1 <= s.length <= 100
s consists only of lowercase English letters.
Solution
屬於比較爛的雙指針寫法。
時間複雜度: $O(n^2)$
davidchen0970 changed a year agoView mode Like Bookmark