Add sum of digits squared

lulunac27a · lulunac27a · commit e324bdd5df28 · 2025-06-11T15:38:19.000-05:00
diff --git a/sum-of-square-digits/app.js b/sum-of-square-digits/app.js
@@ -0,0 +1,39 @@
+const numberInput = document.getElementById('numberInput');//number input
+const result = document.getElementById('result');//result display
+const option = document.getElementById('option');//option selection
+let mode = option.value;
+function calculateSumOfDigits() {//calculate sum of digits
+    const number = parseFloat(numberInput.value);//get number value from input
+    if (isNaN(number)) {//if entered number is not a number
+        result.textContent = 'Please enter a valid number.';
+    }
+    const sum = calculateSum(number);//calculate sum of entered number
+    result.textContent = sum;//display result
+}
+function calculateSumOfAllDigits(number) {//calculate sum of all digits
+    const numberString = number.toString().split('e')[0].replaceAll('.', '').replaceAll('-', '');//remove non digit characters to avoid errors
+    let sum = 0;
+    for (let i = 0; i < numberString.length; i++) {
+        const digit = parseInt(numberString[i], 10);
+        sum += digit * digit;//square each digit
+    }
+    return sum;
+}
+
+function calculateSumOfIntegerDigits(number) {//calculate sum of integer digits
+    const integerString = parseInt(number, 10).toString().replaceAll('.', '').replaceAll('-', '');//remove non digit characters to avoid errors
+    let sum = 0;
+    for (let i = 0; i < integerString.length; i++) {
+        const digit = parseInt(integerString[i], 10);
+        sum += digit * digit;//square each digit
+    }
+    return sum;
+}
+
+function calculateSum(number) {//calculate sum function
+    if (mode === 'sumOfDigits') {//if mode is sum of digits
+        return calculateSumOfAllDigits(number);//return sum of all digits
+    } else if (mode === 'sumOfIntegerDigits') {//else if mode is sum of integer digits
+        return calculateSumOfIntegerDigits(number);//return sum of integer digits
+    }
+}
diff --git a/sum-of-square-digits/index.html b/sum-of-square-digits/index.html
@@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <title>Sum of Digits Calculator</title>
+</head>
+<body>
+    <h1>Sum of Digits Calculator</h1>
+    <input type="number" id="numberInput">
+    <select id="option"><!--mode to calculate sum-->
+        <option value="sumOfDigits" selected>Sum of Digits</option>
+        <option value="sumOfIntegerDigits">Sum of Integer Digits</option>
+    </select>
+    <button onclick="calculateSumOfDigits()">Calculate</button>
+    Sum of Digits: <p id="result"><!--result display--></p>
+    <script src="app.js"></script>
+</body>
+</html>
