26 lines
640 B
JavaScript
26 lines
640 B
JavaScript
const sumAll = function(...args) {
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let totalOfNumbers = 0;
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let firstNumber = args[0];
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let lastNumber = args[args.length - 1];
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/* If either is not a number, return ERROR */
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if (typeof firstNumber != "number" || typeof lastNumber != "number") {
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return 'ERROR';
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}
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/* If first number is greater, switch numbers */
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if (firstNumber > lastNumber) {
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let tempNumber = firstNumber;
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firstNumber = lastNumber;
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lastNumber = tempNumber;
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}
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for (let i = firstNumber; i <= lastNumber; i++) {
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totalOfNumbers += i;
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}
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return totalOfNumbers;
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}
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module.exports = sumAll |