英文小辭典

把題目常出現單字放在這

Array/String

• Subarrays/substrings: 一定要連續的

 [1, 2, 3, 4] 
 // subarray 為
 [1], [1,2], [1,2,3], [1,2,3,4], [2,3,4], [3,4], [4] 等等

• Subsequences: 排序要一樣但不一定是連續

 [1, 2, 3, 4] 
 // Subsequences 為
 [1, 3], [4], [], [2, 3], but not [3, 2], [5], [4, 1]

• Subsets: any set of elements from the original array or string. 不管排序也不需要連續

 [1, 2, 3, 4] 
 // Subsets 為
 [3, 2], [4, 1, 2], [1]... 
 // subset 不管順序所以 [4, 1, 2] 跟 [1, 2, 4] 相同

Math Symbols

• {} curly bracket

• () round bracket

• [] square bracket

• ! Exclamation mark

a

• ascending order 小到大

• adjacent 相鄰

c

• corresponding 相對應 ex. Given a date, return the corresponding day of the week for that date.

• case sensitive 區分大小寫 ex. "a" is considered a different type of stone from "A"

• contiguous / consecutively 連續的

• composite number 複合數 (4, 6, 8, 9, 12...)

• cube 三次方 , eg, 5³ (five cube), 那 n 次方為 5 to the power of n. (5ⁿ)

d

• descending 大到小

• divide 除

• distinct 不同

• denoted 表示, eg. commonly denoted F(n) form a sequence

• Destructuring

let [a, b] = [1, 2];
[a, b] = [b, a]
// a =  2, b =1

e

• even 偶數 / odd 奇數 distinct 不同 [範例]

• encryption　加密

• Expression : 會回傳東西

var a = 5;
12+ 3

f

• followed by 其次是，eg. call '50", followed by a space, followed by the address. → 50 leetcode.com

i

• integers 整數 = 正整數 + 附整數 + 零的統稱

• indices 指數，ex. 位置 ['apple', 'banana'] apple 的 indices 就是 0

• intersection 交集

• Immutable 不可改變的, eg. 原始值 Number, String...

l

• literals

[1, 2, 3] // Array literals  
2 // Numeric literals
{a: 1} //Object literals
"hannah" // String literals
`Hi ${dd}`  // Template literals

m

• multiplication 乘

• majority element 大多數的元素 ex. [2, 2, 2, 1] → 2

• Mutable 可改變的, eg. obj

n

• non-negative integers 正整數

p

• positive integers 正整數

• palindrome 回文

• partition 分割

• Primes Number 質數 (2, 3, 5, 7, 11...)

r

• respectively 分別

• Rest Parameters 可以把他想成取代 arguments 的語法

function sum(...nums) {
 console.log(nums)
}
sum(1, 2, 3, 4) // [1, 2, 3]

s

• squares of its digits 數字平方， ex 9² → 81, 5²(five square)

• Spread Operator 把陣列展開成個別值

var params = [ "a", 1, 7 ]
var other = [ 1, 2, ...params ] // [ 1, 2, "a", 1, 7 ]

• Statement 不會回傳東西

if(){}
for(){}
while(){}

t

• Ternary indicate 三元運算式，conditional ? truethy_block : falsey_block

• Transpose 顛倒