This document describes how to implement ArrayList in a block coding manner.
Index
Definition of ArrayList
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ArrayList is a data structure that uses continuous memory space to have data.
ArrayList Block
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Introduces the blocks entered the ArrayList category of SyncTree NBlock.
1) ArrayList
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Used to create (declare) an ArrayList data structure.
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Click the button to add or remove Value items.
button to add or remove Value items.
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Below is an example of the ArrayList block declaration.
2) Get Array Variable
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Use to import the Value of ArrayList as a whole, or a specific Key.
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Enter the variable name of the ArrayList object to import the information as the first factor.
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From the second factor (Item Keys), enter the index of ArrayList to import Value within ArrayList as Integer.
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If no Value is entered in Item Keys, Value is added after the last index in the ArrayList.
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Click the button to add or remove Value items.
button to add or remove Value items.•
If Item Keys is added, the index is sequentially searched in the nested ArrayList to find the value.
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Below is an example of using Get ArrayList Block.
3) Add Array Variable
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Adds a Value to ArrayList.
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Enter the variable name of the ArrayList object to which you want to add information as the first factor.
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Enter the Value to add to the Add value.
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Click the button to add or remove Item Keys.
button to add or remove Item Keys.•
If Item Keys is added, values are added by sequentially searching indexes in the nested ArrayList.
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Below is an example of using Add Array Block.
4) Remove Array Variable
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Remove Key and Value from ArrayList.
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Enter the variable name of the ArrayList object to import the information as the first factor.
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Click the button to add or remove Item Keys.
button to add or remove Item Keys.•
From the second factor (Item Keys), enter the index of the Value to remove within the ArrayList.
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If Item Keys is added, the index is sequentially searched in the nested ArrayList and values are removed.
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Below is an example of using Remove Array Block.
