1.Indexing cannot yield multiple results
原因：变量名与内置的函数名相同，比如：[min, k] = min(C)
解决办法：更改变量名：[m, k] = min(C)
2.This statement is not inside any function.
It follows the END that terminates the definition of the function "function_name".
原因：多了一个end
解决办法：去掉一个end