Calculator In Java Using Switch Case

var dayOfWeek = ‘Monday’; // Possible values: ‘Monday’, ‘Tuesday’, ‘Wednesday’, ‘Thursday’, ‘Friday’, ‘Saturday’, ‘Sunday’
var numberOfDays = 5; // Number of days to add or subtract
var dayName = calculateDayOfWeek(dayOfWeek, numberOfDays);

function calculateDayOfWeek(dayOfWeek, numberOfDays) {
var days = [‘Monday’, ‘Tuesday’, ‘Wednesday’, ‘Thursday’, ‘Friday’, ‘Saturday’, ‘Sunday’];
var index = days.indexOf(dayOfWeek);

if (index === -1) {
return ‘Invalid day of the week’;
}

var resultIndex = (index + numberOfDays) % 7;

// Handle negative results
if (resultIndex < 0) { resultIndex += 7; }\n\n return days[resultIndex];\n}\n\n

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Day of Week Calculator

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Calculate the day of the week after or before a specified number of days.

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\n \n \n Select the starting day of the week\n

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\n \n \n Positive for future, negative for past\n

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