Class SegmentTree

Index

Constructors

Accessors

end root start values

Methods

build querySumByRange updateNode

Constructors

constructor

new SegmentTree(values, start?, end?): SegmentTree
The constructor initializes the values, start, end, and root properties of an object.
Parameters
- values: number[]
  An array of numbers that will be used to build a binary search tree.
- Optionalstart: number
  The start parameter is the index of the first element in the values array that should be included in the range. If no value is provided for start, it defaults to 0, which means the range starts from the beginning of the array.
- Optionalend: number
  The "end" parameter is the index of the last element in the "values" array that should be included in the range. If not provided, it defaults to the index of the last element in the "values" array.
Returns SegmentTree
- Defined in binary-tree/segment-tree.ts:155

Accessors

end

get end(): number
The function returns the value of the protected variable _end.

Returns number
The value of the protected property _end.
- Defined in binary-tree/segment-tree.ts:196

root

get root(): undefined | SegmentTreeNode
The function returns the root node of a segment tree.

Returns undefined | SegmentTreeNode
The root property of the class SegmentTreeNode or undefined if it is not defined.
- Defined in binary-tree/segment-tree.ts:206

start

get start(): number
The function returns the value of the protected variable _start.

Returns number
The start value, which is of type number.
- Defined in binary-tree/segment-tree.ts:186

values

get values(): number[]
The function returns an array of numbers.

Returns number[]
An array of numbers is being returned.
- Defined in binary-tree/segment-tree.ts:176

Methods

build

build(start, end): SegmentTreeNode
The build function creates a segment tree by recursively dividing the given range into smaller segments and assigning the sum of values to each segment.
Parameters
- start: number
  The start parameter represents the starting index of the segment or range for which we are building the segment tree.
- end: number
  The "end" parameter represents the ending index of the segment or range for which we want to build a segment tree.
Returns SegmentTreeNode
a SegmentTreeNode object.
- Defined in binary-tree/segment-tree.ts:219

querySumByRange

querySumByRange(indexA, indexB): number
The function querySumByRange calculates the sum of values within a given range in a segment tree.
Parameters
- indexA: number
  The starting index of the range for which you want to calculate the sum.
- indexB: number
  The parameter indexB represents the ending index of the range for which you want to calculate the sum.
Returns number
The function querySumByRange returns a number.
- Defined in binary-tree/segment-tree.ts:281

updateNode

updateNode(index, sum, value?): void
The function updates the value of a node in a segment tree and recalculates the sum of its children if they exist.
Parameters
- index: number
  The index parameter represents the index of the node in the segment tree that needs to be updated.
- sum: number
  The sum parameter represents the new value that should be assigned to the sum property of the SegmentTreeNode at the specified index.
- Optionalvalue: number
  The value parameter is an optional value that can be assigned to the value property of the SegmentTreeNode object. It is not currently used in the code, but you can uncomment the line // cur.value = value; and pass a value for value in the
Returns void
The function does not return anything.
- Defined in binary-tree/segment-tree.ts:245