題目:
如例題: 3的倍數用Fizz代替,5用Buzz,同時是3跟5的倍數用FizzBuzz代替。
n = 15,Return:[ "1", "2", "Fizz", "4", "Buzz", "Fizz", "7", "8", "Fizz", "Buzz", "11", "Fizz", "13", "14", "FizzBuzz"]
給定一個字,判斷大寫方式是否正確,有三種狀況是正確的,第一種是全部字都是大小,第二種是全部沒有大寫,第三種是只有第一個字母是大寫。
Example 1:
Input: "USA"Output: True
Example 2:
Input: "FlaG"Output: False
給定一個string,找到string中第一個非重複的index是多少,都是重複的話回傳-1。
Input: s = "leetcode"Output: 0
將string裡面的母音aeiou做reverse。
Input: s = "hello"Output: "holle"
Input: s = "leetcode"Output: "leotcede"
不能用額外的空間反轉字符串。
Input: ["h","e","l","l","o"]Output: ["o","l","l","e","h"]
Input: ["H","a","n","n","a","h"]Output…
在數字千位位置加一個string的點。
Input: n = 987Output: "987"
Input: n = 1234Output: "1.234"
給定一個array,如果有連續出現三個奇數,return True 其餘return False。
Input: arr = [2,6,4,1]Output: falseExplanation: There are no three consecutive odds.
給定一個array,array 中missing value組成另外一個array,給一個k值,求第k個missing value。見範例。
Input: arr = [2,3,4,7,11], k = 5Output: 9Explanation: The missing positive integers are…
給兩個string s跟t,check if s is a subsequence of t。(順序不能變)
s
t。(順序不能變)
返回true or false
Input: s = "abc", t = "ahbgdc"Output: true
給定一個array,問最多連續重複出現幾次1。
Input: [1,1,0,1,1,1]Output: 3Explanation: The first two digits or the last three digits are consecutive 1s. The maximum number of consecutive 1s is…