1. Introduction
Swapping values between two variables is a routine task in programming. Typically, a temporary (or third) variable is employed to hold one of the values during the swap. However, there are methods to exchange values without the need for a third variable. In this guide, we will develop a Swift program to swap two numbers without resorting to a temporary variable.
2. Program Overview
Our Swift program aims to interchange the values of two variables. We'll utilize mathematical operations to achieve this swap without the aid of a third variable.
3. Code Program
// Declare two numbers to be swapped var num1 = 5 var num2 = 7 // Print original values print("Original values: num1 = \(num1), num2 = \(num2)") // Swap numbers without using a temporary variable num1 = num1 + num2 num2 = num1 - num2 num1 = num1 - num2 // Print swapped values print("Swapped values: num1 = \(num1), num2 = \(num2)")
Output:
Original values: num1 = 5, num2 = 7 Swapped values: num1 = 7, num2 = 5
4. Step By Step Explanation
1. var num1 = 5 and var num2 = 7: Here, we initialize two variables, num1 and num2, with the values 5 and 7 respectively.
2. The print statement, print("Original values: num1 = \(num1), num2 = \(num2)"), displays the original values of the two numbers.
3. The swap procedure:
- num1 = num1 + num2: We add num2 to num1 and store the result in num1. After this operation, num1 contains the combined value of the original num1 and num2.
- num2 = num1 - num2: We subtract the original value of num2 from the current value of num1 (which is the combined value). This gives us the original value of num1, which we assign to num2.
- num1 = num1 - num2: We subtract the new value of num2 (which is the original value of num1) from the current value of num1 to get the original value of num2, which we assign back to num1.
4. The final print statement, print("Swapped values: num1 = \(num1), num2 = \(num2)"), displays the values of the two numbers after the swap.
Related Swift Examples:
Swift Hello World Program Swift Program to Add Two Numbers Swift Program to Subtract Two Numbers Swift Program to Multiply Two Numbers Swift Program to Divide Two Numbers Swift Program to Find Remainder Swift Program to Check Even or Odd Swift Program to Find Factorial of a Number Swift Program to Generate Fibonacci Series Swift Program to Swap Two Numbers Without Using Temporary Variable Swift Program to Find Largest Among Three Numbers Swift Program to Calculate the Area of a Circle Swift Program to Reverse a Number Swift Program to Make a Simple Calculator Swift Program to Check Palindrome Swift Program to Count Number of Digits in an Integer Swift Program to Sum of Natural Numbers Swift Program to Display Times Table Swift Program to Check Prime Number Swift Program to Find LCM Swift Program to Find GCD Swift Program to Find the Power of a Number Swift Program to Split a String into Words Swift Program to Check Leap Year Swift Program to Join Two Strings Swift Program to Check Armstrong Number Swift Program to Find Sum of Array Elements Swift Program to Find the Largest Element of an Array Swift Program to Perform Matrix Addition Swift Program to Transpose a Matrix Swift Program to Multiply Two Matrices Swift Program to Find Length of a String Swift Program to Copy One String to Another String Swift Program to Concatenate Two Strings Swift Program to Search for a Character in a String Swift Program to Count Frequency of a Character in String Swift Program to Create a Simple Class and Object Swift Program to Implement Inheritance Swift Program to Handle Simple Exceptions Swift Variables and Constants Example Swift Data Types (Int, Double, String) Example Swift Optionals and Optional Binding Example Swift Tuples Example Swift Array Example Swift Dictionary Example Swift Set Example Swift Closures Example Swift Enums Example Swift Structures Example Swift Properties (Stored, Computed) Example Swift Methods (Instance, Type) Example Swift Subscripts Example Swift Inheritance and Overriding Example Swift Protocols Example Swift Extensions Example Swift Generics and Generic Functions Example Swift Error Handling with Do-Catch Example Swift Guard Statement Example Swift Defer Statement Example Swift Type Casting (as, is, as?) Example Swift Access Control Example Swift Attributes (@available, @discardableResult) Example Swift Pattern Matching Example Swift Switch Statement and Cases Example Swift For-In Loop Example Swift While and Repeat-While Loops Example Swift Conditional Statements (If, If-Else, Ternary) Example Swift Operators Example Swift Memory Management Example Swift Strong, Weak, and Unowned References Example Swift Initialization and Deinitialization Example Swift Protocol-Oriented Programming Example Swift Nested Types Example Swift Type Aliases Example Swift Dynamic Member Lookup Example Swift Lazy Stored Properties Example Swift KeyPaths Example Swift String Manipulation and Methods Example Swift Regular Expressions Example Swift Swift Programs
Comments
Post a Comment