Check if a queue is empty or not There is a functionqueue::empty()that can be used to check whether queue is empty or not – it returns 1 (true) if queue is empty else returns 0 (false). But, in this example – we are checking it by usingqueue::size()function. ...
// Scala program to check a queue is empty or notimportscala.collection.mutable._objectSample{// Main methoddefmain(args:Array[String]){varqueue1=Queue();varqueue2=Queue(10,20,30,40,50);if(queue1.isEmpty)println("queue1 is empty");elseprintln("queue1 is not empty");if(queue2.is...
An example of using string.len method is shown below.main.luaOpen Compiler -- text is nil -- we can check length of string if not text or string.len(text) == 0 then print(text,"is empty.") else print(text,"is not empty.") end -- text is empty text = '' if not text or ...
Learn how to check if a queue is empty and get the size of a queue using C++ Standard Template Library (STL).
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const value = 2 isNaN(value) //false isNaN('test') //true isNaN({}) //true isNaN(1.2) //falseIf isNaN() returns false, the value is a number.Another way is to use the typeof operator. It returns the 'number' string if you use it on a number value:typeof 1 //'number'...
Tasks Queue <context-group purpose="location"> <context context-type="sourcefile">src/app/components/common/system-status-dialog/system-status-dialog.component.html</context> <context context-type="linenumber">83</context> <context context-type="linenumber">94</context> </context-group> </tran...
python class TreeNode: def __init__(self, val=0, left=None, right=None): self.val = val self.left = left self.right = right class Solution: def isCompleteTree(self, root: TreeNode) -> bool: if not root: return True queue = [(root,1)] i = 0 number = 0 while queue: node...
classSolution{public:boolisCompleteTree(TreeNode* root){ queue<TreeNode*> q{{root}};boolfound =false;while(!q.empty()) { TreeNode *cur = q.front(); q.pop();if(!cur) { found =true; }else{if(found)returnfalse; q.push(cur->left); ...