Arrays in Java: Single and Multi-dimensional

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Arrays in Java: Single and Multi-dimensional

In Java, loops are used to execute a block of code repeatedly as long as a specified condition is true. Java provides three main types of loops: for, while, and do-while.

1. for loop

The for loop is used when the number of iterations is known. It has three parts: initialization, condition, and increment/decrement.

Example:

java

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for (int i = 1; i <= 5; i++) {

    System.out.println(i);

2. while loop

The while loop is used when the number of iterations is not known in advance. It checks the condition before executing the loop body.

Example:

java

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int i = 1;

while (i <= 5) {

    System.out.println(i);

    i++;

3. do-while loop

The do-while loop is similar to while, but it executes the loop body at least once before checking the condition.

Example:

java

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int i = 1;

do {

    System.out.println(i);

    i++;

} while (i <= 5);

Summary:

for loop: Best for fixed number of iterations.

while loop: Good when the condition needs to be checked first.

do-while loop: Ensures the loop runs at least once.

All these loops are essential for controlling the flow of a program and avoiding repetitive code.

Java Data Types and Variables

Java Control Statements (if, switch)

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