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Added check number option in Armstrong Number Calculator (#1931)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,50 +1,59 @@ | ||
| // Function to find Armstrong numbers based on user input | ||
| function findArmstrongNumbers() { | ||
| const numOfDigits = document.forms.myform.numOfDigits.value; | ||
| // Show the selected section and hide others | ||
| function showSection(sectionId) { | ||
| const sections = document.querySelectorAll('.card'); | ||
| sections.forEach((section) => { | ||
| if (section.id === sectionId) { | ||
| section.classList.remove('hidden'); | ||
| } else { | ||
| section.classList.add('hidden'); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| // Validate user input | ||
| if (numOfDigits === "" || Number.isNaN(numOfDigits) || numOfDigits < 1 || numOfDigits > 7) { | ||
| alert("Please enter a valid number between 1 and 7"); | ||
| } else { | ||
| const n = parseInt(numOfDigits); | ||
| const myElement = document.getElementById("armstrongNumbers"); | ||
| const chunkSize = 1000; | ||
| // Check if a number is Armstrong | ||
| function checkArmstrong() { | ||
| const numberInput = document.getElementById("number").value; | ||
| const resultDiv = document.getElementById("result"); | ||
|
|
||
| let startRange = Math.pow(10, n - 1); | ||
| let endRange = Math.pow(10, n); | ||
| if (!numberInput || isNaN(numberInput)) { | ||
| resultDiv.innerHTML = "<span style='color: yellow; font-weight: 600; font-size: 19px'>Please enter a valid number.</span>"; | ||
| return; | ||
| } | ||
|
|
||
| let armstrongNumbers = []; | ||
| const number = parseInt(numberInput, 10); | ||
| const digits = numberInput.split("").map(Number); | ||
| const power = digits.length; | ||
| const sum = digits.reduce((acc, digit) => acc + Math.pow(digit, power), 0); | ||
|
|
||
| // Process the range in smaller chunks to improve responsiveness | ||
| for (let chunkStart = startRange; chunkStart <= endRange; chunkStart += chunkSize) { | ||
| let chunkEnd = Math.min(chunkStart + chunkSize, endRange); | ||
| if (sum === number) { | ||
| resultDiv.innerHTML = `<span style="color: #63f54c; font-weight: 600; font-size: 19px">Yes! ${number} is an Armstrong number.</span>`; | ||
| } else { | ||
| resultDiv.innerHTML = `<span style="color: yellow; font-weight: 600; font-size: 19px">No, ${number} is not an Armstrong number.</span>`; | ||
| } | ||
| } | ||
|
|
||
| // Check for Armstrong numbers in the current chunk | ||
| for (let num = chunkStart; num < chunkEnd; num++) { | ||
| if (isArmstrongOptimized(num, n)) { | ||
| armstrongNumbers.push(num); | ||
| } | ||
| } | ||
| } | ||
| // Find Armstrong numbers | ||
| function findArmstrongNumbers() { | ||
| const numOfDigits = document.getElementById("numOfDigits").value; | ||
| const resultDiv = document.getElementById("armstrongNumbers"); | ||
|
|
||
| myElement.textContent = "Armstrong Numbers: " + armstrongNumbers.join(", "); | ||
| if (!numOfDigits || isNaN(numOfDigits) || numOfDigits < 1 || numOfDigits > 7) { | ||
| resultDiv.innerHTML = "<span style='color: yellow; font-weight: 600; font-size: 19px'>Please enter a valid number between 1 and 7.</span>"; | ||
| return; | ||
| } | ||
| } | ||
|
|
||
| // Function to check if a number is an Armstrong number | ||
| function isArmstrongOptimized(num, power) { | ||
| let temp = num; | ||
| let sumOfPowers = 0; | ||
| const n = parseInt(numOfDigits, 10); | ||
| const start = Math.pow(10, n - 1); | ||
| const end = Math.pow(10, n); | ||
| const armstrongNumbers = []; | ||
|
|
||
| // Compute the sum of digits raised to the power | ||
| while (temp > 0) { | ||
| let digit = temp % 10; | ||
| sumOfPowers += Math.pow(digit, power); | ||
| temp = Math.floor(temp / 10); | ||
| for (let i = start; i < end; i++) { | ||
| const digits = i.toString().split("").map(Number); | ||
| const sum = digits.reduce((acc, digit) => acc + Math.pow(digit, n), 0); | ||
| if (sum === i) { | ||
| armstrongNumbers.push(i); | ||
| } | ||
| } | ||
| const additionalContent = document.getElementById('additionalContent'); | ||
| additionalContent.innerText = 'Explanation: A number that is equal to the sum of cubes of its digits.'; | ||
|
|
||
| // Check whether sum of powers equals the original number or not | ||
| return sumOfPowers === num; | ||
| } | ||
|
|
||
| resultDiv.innerHTML = `<span style='color: yellow; font-weight: 600; font-size: 19px'>Armstrong Numbers: ${armstrongNumbers.join(", ")}</span>`; | ||
| } |
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