TAILIEUCHUNG - Java programming experience

Declaring and using array Array of objects Sorting and seaching elements in an array Two-dimensional array The ArrayList class 2 .Array • An array is a data structure that stores a collection of | Arrays Chapter 5 Outline Declaring and using array Array of objects Sorting and seaching elements in an array Two-dimensional array The ArrayList class Array An array is a data structure that stores a collection of values of the same type Arrays are accessed with [ ] Array indices are zero-based Example: scores[5] returns the 5th value in the array 0 1 2 3 4 5 6 7 8 9 79 87 94 82 67 98 87 81 74 91 scores The entire array has a single name Each value has an index Declaring an array Syntax: Example: int[] scores = new int[100]; an array that can hold 100 integers String[] names; names = new names[20]; an array that can hold 20 String objects You can create an array object and supply initial values at the same time int[] smallPrimes = { 2, 3, 5, 7, 11, 13 }; char[] letterGrades = {A, B, C, D, ’F}; DataType[] arrayName = new DataType[size]; DataType[] arrayName; // only declares the variable arrayName = new DataType[size]; See ebook page 328 for other syntax Note that

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