Python打卡第二天 1.条件语句 if condition_1: statement_block_1 elif condition_2: statement_block_2 else: statement_block_3 如果 “condition_1” 为 True 将执行 “statement_block_1” 块语句,如果 “c...条件与循环 一:条件判断 计算机之所以能做很多自动化的任务,因为它可以自己做条件判断。 1:...
if, elseif, else Execute statements if condition is true collapse all in pageSyntax if expression statements elseif expression statements else statements end Description if expression, statements, end evaluates an expression, and executes a group of statements when the expression is true. An ...
if, elseif, else Execute statements if condition is true collapse all in pageSyntax if expression statements elseif expression statements else statements end Description if expression, statements, end evaluates an expression, and executes a group of statements when the expression is true. An ...
x = 42;ifexist('myfunction.m','file') && (myfunction(x) >= pi) disp('Expressions are true')end The first part of the expression evaluates to false. Therefore, MATLAB does not need to evaluate the second part of the expression, which would result in an undefined function error. ...
The data associated with this array If numeric, whether the variable is real or complex If sparse, its indices and nonzero maximum elements If a structure or an object, the number of fields and field names To access themxArraystructure, use functions in the C or Fortran Matrix APIs. These...
Regardless of the programming language, there are judgment statements, and whether they are in C/C++/Python, they have the same name, called if statements, but there are some differences in the syntax structure. In Matlab, a space is added after the if condition. If the condition is satisfi...
end if ~isDimSet % preserve backward compatibility with 0x0 empty if isequal(x,[]) y = sum(x,flag)./0; return end dim = find(size(x)~=1,1); if isempty(dim) dim = 1; end else if isempty(dim) error(message('MATLAB:mean:nonNumericSecondInput')); end end if ~isobject(x)...
(Set LB = [] and/or UB = [] if no bounds % exist.) % % X = FMINCON(FUN,X0,A,B,Aeq,Beq,LB,UB,NONLCON,OPTIONS) minimizes with % the default optimization parameters replaced by values in OPTIONS, an % argument created with the OPTIMOPTIONS function. See OPTIMOPTIONS for % details...
到9的不重复数 c = mat2cell(sd,[3,3,3],[3,3,3]) % 每个九宫格是否为1到9的不重复数 Condition_3 = true; for i = 1:9 tmp = c{i}; %第i个宫格对应的3×3的方阵 % tmp(:) 线性索引排序 if ~all(sort(tmp(:)) == (1:9)') Condition_3 = false; break end end Condition_...
作为理工科的社畜,懂计算会计算是一个必不可少的技能,其中尤其是对于土木工程人来说,结构力学、弹塑性力学、计算力学是数值计算中无法逾越的一道坎。由于Matlab简单使用,好学好操作,工科人往往都喜欢使用Matlab来实现数值算法。但是Matlab有几个缺点: Matlab是非开源的国外商业软件,存在安全问题以及盗版侵权问题; ...