For enhanced loop in Java .. explaination

 Ah! You want a clear explanation of the enhanced for-loop (for-each loop) in your code. Let’s go step by step.

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Syntax:

for(Type variable : collection) {
    // use variable here
}

• Type → data type of the elements in the collection/array

• variable → temporary variable that holds the current element in each iteration

• collection → array, List, or any iterable

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Example in your code:

for(String comp : components) {
    // comp is the current string element from components array
}

• components is a String[] array like {"home", ".", "user"}

• The loop does:

Iteration	comp
1	"home"
2	"."
3	"user"

• On each iteration, comp takes the value of the next element in the array.

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Another example:

String[] arr = {"a", "b", "c"};
for(String s : arr) {
    System.out.println(s);
}

Output:

a
b
c

✅ Key points:

1. You cannot modify the array structure (like adding/removing elements) inside an enhanced for-loop.

2. It is simpler than the traditional for(int i=0; i<array.length; i++) loop.

3. Great for iterating over arrays or collections when you just need the elements.

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In your simplifyPath code:

for(String str1 : st) {
    sb.append("/").append(str1);
}

• st is a stack of strings.

• str1 takes each element of the stack in order (bottom → top).

• You append / + str1 to the StringBuilder.

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If you want, I can draw a small diagram showing how comp and str1 change in your simplifyPath example, which makes the enhanced for-loop super visual.

Do you want me to do that?