Number less than or equal to the number in the heap sorting program
A bug occurs during heap sorting. It takes a long time for debugging to find the cause.Less than or equalThe boundary in recursion is not fully considered. The code is written in
Let me give you an example:For example, you can return a function in these situations:1, the number greater than 02, less than 0 of the number3, equal to 0 of the number (that is, 0)4, False (when failed)If you want to catch failure, you must use = =
This article focuses on two issues:
(1) why sometimes forced conversion succeeds while writing code, but some types cannot? Is this a C ++ kernel rule or a custom rule?
(2) How can I use an integer or string value controlled by the kernel to
Compare size function sign Function Syntax: sign (n) Function Description: Take the number n symbol, return 1 if it is greater than 0, return-1 if it is less than 0, return 0 if it is equal to 0. Example: 1. selectsign (100), sign (-100), sign (0)
In 10, the first article in Iteye recorded how the single sign-on of our system was implemented. But at that time the article is not good, the thinking is very impetuous, it is difficult to understand, in CSDN's first technical blog intends to
4.1.4 Relational operatorsIn C + +, in addition to arithmetic operations that require arithmetic operators to subtraction the data, we sometimes need to manipulate the relationship between the data, that is, to compare the size of the two data to
4.1.4 Relational operatorsIn C + +, in addition to arithmetic operations that require arithmetic operators to subtraction the data, we sometimes need to manipulate the relationship between the data, that is, to compare the size of the two data to
Compare size function Sign
function Syntax:Sign (n)
Function Description:Take the symbol of number n, greater than 0 to return 1, less than 0 to return-1, equal to 0 to return 0
Example:One, select sign (m), sign (-M), sign (0) from dual;
SIGN (+)
Original address: http://www.cnblogs.com/BetterWF/archive/2012/06/12/2545829.htmlReproduced in reserveCompare size function Signfunction Syntax:Sign (n)Function Description:Take the sign of the number n, greater than 0 returns 1, less than 0 returns-
PHP is one of the most commonly used back-end languages in Web sites, and is a type of system dynamic, weakly typed object-oriented programming language. can be embedded in HTML text, is one of the most popular web back-end languages, and can and
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