public final class BoundedProportionalArraySizingStrategy extends java.lang.Object implements ArraySizingStrategy
ArrayList
uses:
minGrow = 1 maxGrow = Integer.MAX_VALUE (unbounded) growRatio = 1.5f
Modifier and Type | Field and Description |
---|---|
static float |
DEFAULT_GROW_RATIO
Default resize is by half the current buffer's size.
|
static int |
DEFAULT_MAX_GROW_COUNT
Maximum grow count (unbounded).
|
static int |
DEFAULT_MIN_GROW_COUNT
Minimum grow count.
|
float |
growRatio
The current buffer length is multiplied by this ratio to get the
first estimate for the new size.
|
static int |
MAX_ARRAY_SIZE
Used by
ArrayList internally to account for reference sizes. |
int |
maxGrowCount
Maximum number of elements to grow, if capacity exceeded.
|
int |
minGrowCount
Minimum number of elements to grow, if capacity exceeded.
|
Constructor and Description |
---|
BoundedProportionalArraySizingStrategy()
Create the default sizing strategy.
|
BoundedProportionalArraySizingStrategy(int minGrow,
int maxGrow,
float ratio)
Create the sizing strategy with custom policies.
|
public static final int MAX_ARRAY_SIZE
ArrayList
internally to account for reference sizes.public static final int DEFAULT_MIN_GROW_COUNT
public static final int DEFAULT_MAX_GROW_COUNT
public static final float DEFAULT_GROW_RATIO
public final int minGrowCount
public final int maxGrowCount
public final float growRatio
2
.public BoundedProportionalArraySizingStrategy()
public BoundedProportionalArraySizingStrategy(int minGrow, int maxGrow, float ratio)
public int grow(int currentBufferLength, int elementsCount, int expectedAdditions)
grow
in interface ArraySizingStrategy
currentBufferLength
- Current size of the array (buffer). This number
should comply with the strategy's policies (it is a result of initial rounding
or further growths). It can also be zero, indicating the growth from an empty
buffer.elementsCount
- Number of elements stored in the buffer.expectedAdditions
- Expected number of additions (resize hint).elementsCount + expectedAdditions
.public int round(int capacity)
round
in interface ArraySizingStrategy
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