在MATLAB中,可以使用IF语句来进行条件判断和控制流程。contains函数是MATLAB中的一个字符串函数,用于判断一个字符串是否包含另一个字符串。 contains函数的语法如下: 代码语言:txt 复制 tf = contains(str, pattern) 其中,str是要进行判断的字符串,pattern是要查找的子字符串。contains函数返回一个逻辑值,如果str包含...
if contains(str, 'hello') disp('The string contains "hello"'); else disp('The string does not contain "hello"'); end 9. 判断一个矩阵是否为正定矩阵 if all(eig(A) > 0) disp('A is a positive definite matrix'); else disp('A is not a positive definite matrix'); end 10. 判断一...
TF = contains(str,pat) returns 1 (true) if str contains the specified pattern, and returns 0 (false) otherwise. If pat is an array containing multiple patterns, then contains returns 1 if it finds any element of pat in str. If str is a string array or cell array, then TF is a lo...
[1240] CONTAINS函数 CONTAINS函数,隶属于“信息”类函数。用途:适用于多列条件判定。...@流景大佬提过,这个函数有点落后了,但是白茶觉得这个函数相对于其他多列判定而言,更容易被理解。...注:因为此函数第一参数支持表达式,这点很有用。返回结果判定比较值是否在
Create a string array that contains addresses. str = ["221B Baker St.","Tour Eiffel Champ de Mars","4059 Mt Lee Dr."] str =1x3 string"221B Baker St." "Tour Eiffel Champ de Mars" "4059 Mt Lee Dr." To find addresses that contain numbers, create a pattern that matches an arbitrary...
Create a string array that contains file names. Determine which file names start with either abstract or data. Get str = ["abstract.docx","data.tar.gz","mycode.m","results.ptx"] str = 1x4 string "abstract.docx" "data.tar.gz" "mycode.m" "results.ptx" Get pat = ["abstract",...
In the context of substring matching, we use the%percent sign to signify any sequence of characters before and/or after the substring we are looking for. TheLIKEoperator returnsTrueif the string contains the specific sub-string; else,False. ...
Check if String Contains Certain Data in MySQL Table Using SELECT With INSTR() FunctionAnother method to check whether a string occurs in a table involves using the SELECT statement with the INSTR() function. This function is similar to LOCATE() and is employed to determine the position of ...
Ignore Case When Testing End of String Create a string array that contains file names. Determine which file names end with the.gzextension, ignoring case. str = ["DATA.TAR.GZ","mycode.m","SUMMARY.PPT","tmp.gz"] str =1x4 string"DATA.TAR.GZ" "mycode.m" "SUMMARY.PPT" "tmp.gz" ...
(The last element does not match because it contains an error: G is not a hexadecimal digit.) Get TF = matches(str,pat) TF = 1x5 logical array 0 1 1 0 0 To display the matches, index into str using TF. Get str(TF) ans = 1x2 string "0xA7B" "0x1248" For a list ...