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feat(ts): stack and queue implementation #775
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leios
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algorithm-archivists:master
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0xTheProDev:typescript/stack_and_queue
Aug 23, 2021
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,52 @@ | ||
interface IQueue<T> { | ||
/** | ||
* `dequeue` removes first element from the queue and returns the same | ||
*/ | ||
dequeue(): T; | ||
/** | ||
* `enqueue` adds element to last of the queue and returns the size | ||
*/ | ||
enqueue(data: T): number; | ||
/** | ||
* `size` return size or length of the queue | ||
*/ | ||
size(): number; | ||
/** | ||
* `front` returns first element of the queue | ||
*/ | ||
front(): T; | ||
} | ||
|
||
class Queue<T> implements IQueue<T> { | ||
private readonly list: Array<T> = []; | ||
|
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public enqueue(data: T) { | ||
return this.list.push(data); | ||
} | ||
|
||
public dequeue() { | ||
return this.list.shift(); | ||
} | ||
|
||
public size() { | ||
return this.list.length; | ||
} | ||
|
||
public front() { | ||
return this.list[0]; | ||
} | ||
} | ||
|
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function exampleQueue() { | ||
const numberQueue = new Queue<number>(); | ||
|
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numberQueue.enqueue(4); | ||
numberQueue.enqueue(5); | ||
numberQueue.enqueue(9); | ||
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console.log(numberQueue.dequeue()); | ||
console.log(numberQueue.size()); | ||
console.log(numberQueue.front()); | ||
} | ||
|
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exampleQueue(); |
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,52 @@ | ||
interface IStack<T> { | ||
/** | ||
* `pop` removes last element from the stack and returns the same | ||
*/ | ||
pop(): T; | ||
/** | ||
* `push` adds element to last of the stack and returns the size | ||
*/ | ||
push(data: T): number; | ||
/** | ||
* `size` return size or length of the stack | ||
*/ | ||
size(): number; | ||
/** | ||
* `top` returns last element of the stack | ||
*/ | ||
top(): T; | ||
} | ||
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class Stack<T> implements IStack<T> { | ||
private readonly list: Array<T> = []; | ||
|
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public push(data: T) { | ||
return this.list.push(data); | ||
} | ||
|
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public pop() { | ||
return this.list.pop(); | ||
} | ||
|
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public size() { | ||
return this.list.length; | ||
} | ||
|
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public top() { | ||
return this.list[this.list.length - 1]; | ||
} | ||
} | ||
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function exampleStack() { | ||
const numberStack = new Stack<number>(); | ||
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numberStack.push(4); | ||
numberStack.push(5); | ||
numberStack.push(9); | ||
|
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console.log(numberStack.pop()); | ||
console.log(numberStack.size()); | ||
console.log(numberStack.top()); | ||
} | ||
|
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exampleStack(); |
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@leios do we have standards for TypeHinting in the interface names?
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I don't think so. Maybe we should add something to the code style guide?