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Java Nested Loops

Nested loops in Java are loops placed inside another loop. The inner loop executes completely every time the outer loop executes once. They are useful for working with multi-dimensional data structures like matrices.

Key Topics

1. Nested For Loops

for (initialization; condition; update) {
    // Outer loop code
    for (initialization; condition; update) {
        // Inner loop code
    }
}

2. Example

Printing a multiplication table using nested loops:

public class MultiplicationTable {
    public static void main(String[] args) {
        for (int i = 1; i <= 5; i++) {
            for (int j = 1; j <= 5; j++) {
                System.out.print(i * j + "\t");
            }
            System.out.println();
        }
    }
}

Key Takeaways

  • Nested loops allow you to perform complex iterations.
  • Be cautious of the performance impact due to increased computational complexity.
  • Useful for working with multi-dimensional data structures.
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