Sorting out the basic knowledge points of Scala array

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# # fixed length Array

Arrays generally include fixed-length arrays and variable-length arrays, which are declared using Array in Scala

Note: the index of scalad is marked with parentheses () rather than square brackets [] commonly used in other languages, and the index subscript starts at 0.

/ / declare an array of string type, with a length of 3, set a value for each element, and access the second element by index. Val a = new Array [String] (3) a (0) = "abc" a (1) = "edf" a (2) = "qaz" println (a (1))

The abbreviation of the array

Val a = Array ("1", "2", "3") println (a (1))

Traversal of array

Val list = Array ("5", "2", "3", "4") for (x