Java 运算符优先级
| 运算符 | 优先级 |
|---|---|
| postfix | *expr*++ *expr*-- |
| unary | ++*expr* --*expr* +*expr* -*expr* ~ ! |
| multiplicative | * / % |
| additive | + - |
| shift | << >> >>> |
| relational | < > <= >= instanceof |
| equality | == != |
| bitwise AND | & |
| bitwise exclusive OR | ^ |
| bitwise inclusive OR | | |
| logical AND | && |
| logical OR | || |
| ternary | ? : |
| assignment | = += -= *= /= %= &= ^= |= <<= >>= >>>= |
C运算符优先级
| Precedence | Operator | Description | Associativity |
|---|---|---|---|
| 1 | ++ -- |
Suffix/postfix increment and decrement | Left-to-right |
() |
Function call | ||
[] |
Array subscripting | ||
. |
Structure and union member access | ||
−> |
Structure and union member access through pointer | ||
(*type*){*list*} |
Compound literal(C99) | ||
| 2 | ++ -- |
Prefix increment and decrement | Right-to-left |
+ − |
Unary plus and minus | ||
! ~ |
Logical NOT and bitwise NOT | ||
(*type*) |
Type cast | ||
* |
Indirection (dereference) | ||
& |
Address-of | ||
sizeof |
Size-of | ||
_Alignof |
Alignment requirement(C11) | ||
| 3 | * / % |
Multiplication, division, and remainder | Left-to-right |
| 4 | + − |
Addition and subtraction | |
| 5 | << >> |
Bitwise left shift and right shift | |
| 6 | < <= |
For relational operators < and ≤ respectively | |
> >= |
For relational operators > and ≥ respectively | ||
| 7 | == != |
For relational = and ≠ respectively | |
| 8 | & |
Bitwise AND | |
| 9 | ^ |
Bitwise XOR (exclusive or) | |
| 10 | | |
Bitwise OR (inclusive or) | |
| 11 | && |
Logical AND | |
| 12 | || |
Logical OR | |
| 13 | ?: |
Ternary conditional | Right-to-Left |
| 14 | = |
Simple assignment | |
+= −= |
Assignment by sum and difference | ||
*= /= %= |
Assignment by product, quotient, and remainder | ||
<<= >>= |
Assignment by bitwise left shift and right shift | ||
&= ^= |= |
Assignment by bitwise AND, XOR, and OR | ||
| 15 | , |
Comma | Left-to-right |
python运算符优先级
这个表给出Python的运算符优先级（从低到高）.
从最低的优先级（最松散地结合）到最高的优先级（最紧密地结合）。
这意味着在一个表达式中，Python会首先计算表中较下面的运算符，然后在计算列在表上部的运算符。
| 运算符 | 描述 |
|---|---|
lambda |
Lambda表达式 |
or |
布尔“或” |
and |
布尔“与” |
not x |
布尔“非” |
in，not in |
成员测试 |
is，is not |
同一性测试 |
<，<=，>，>=，!=，== |
比较 |
| |
按位或 |
^ |
按位异或 |
& |
按位与 |
<<，>> |
移位 |
+，- |
加法与减法 |
*，/，% |
乘法、除法与取余 |
+x，-x |
正负号 |
~x |
按位翻转 |
** |
指数 |
x.attribute |
属性参考 |
x[index] |
下标 |
x[index:index] |
寻址段 |
f(arguments...) |
函数调用 |
(experession,...) |
绑定或元组显示 |
[expression,...] |
列表显示 |
{key:datum,...} |
字典显示 |
'expression,...' |
字符串转换 |
