java

checkSortedArrayDesc()

Parameters: int arr[]

An integer array to check for descending sort order.

Returns: Boolean value. True if sorted in descending, False otherwise.

This Java function traverses through each element in an array to check if it's sorted in descending order. If the array is not sorted in descending order, it returns false.

arrays
loops
conditionals
Easy dificulty

How to Validate a Sorted Array in Descending Order in Java

Hello programmer, we'd like to extend a warm welcome to you. In this blog post, we'll be detailing how to write a specific function in java called 'check-sorted-array-desc'. This function checks if an array is sorted in descending order. It's a fairly straightforward yet essential aspect of coding. We hope you'll find this post helpful in your journey into learning more about Java programming.

Step 1: Understand the Task

First, you should understand the task. You're required to create a function that checks if an array is sorted in descending order. This means that each element in the array should be equal to or less than its previous element.

Step 2: Declare the Function

Start by declaring the function, named checkSortedArrayDesc, taking an array as its input parameter.

public static boolean checkSortedArrayDesc(int[] array) {

}

Step 3: Implement the Logic

Next, you will implement the logic inside the function. Iterate through the array starting from the second element up to the end of the array. During each iteration, check if the current element is greater than its previous element. If so, return false.

public static boolean checkSortedArrayDesc(int[] array) {
  for (int i = 1; i < array.length; i++) {
    if (array[i] > array[i - 1]) {
      return false;
    }
  }
}

Step 4: Return True If Array Is Sorted Descending

If the function iterates over the entire array and does not find an element that's greater than the previous one, it means the array is in descending order. Therefore, you should return true.

public static boolean checkSortedArrayDesc(int[] array) {
  for (int i = 1; i < array.length; i++) {
    if (array[i] > array[i - 1]) {
      return false;
    }
  }
  return true;
}

Step 5: Conclusion

At this point, you'd have successfully written a java method that checks if an array is sorted in descending order. The full code implementation of the function is as below

public static boolean checkSortedArrayDesc(int[] array) {
  for (int i = 1; i < array.length; i++) {
    if (array[i] > array[i - 1]) {
      return false;
    }
  }
  return true;
}

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Checking Sorted Array in Descending Order

This function checks if array elements are sorted in descending order.

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Mathematical principle

This function relies on the fundamental mathematical principle of ordering. In a sequence of numbers sorted in descending order, every element `a[i]` should be greater or equal to the element `a[i+1]`. The function leverages this principle to know when the array is out of order.

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