How do I reverse the contents of an array?

Solution Steps

1. Place the two pointers (let start and end ) at the start and end of the array.
2. Swap arr[start] and arr[end]
3. Increment start and decrement end with 1.
4. If start reached to the value length/2 or start ≥ end , then terminate otherwise repeat from step 2.

How does an array can be converted in reverse order?

Yes, you can reverse the array by writing your own function, which loops through the array and swaps elements until the array is sorted. For example, you can reverse an array by converting an array to ArrayList and then use this code to reverse the ArrayList. You can also use the Apache Commons ArrayUtils.

Is used to reverse the order of an array or a sequence?

Using flip() Method The flip() method in the NumPy module reverses the order of a NumPy array and returns the NumPy array object.

Which method is used to reverse an array?

The reverse() method reverses an array in place. The first array element becomes the last, and the last array element becomes the first.

How can you reverse a string?

JAVA

1. public class Reverse.
2. {
3. public static void main(String[] args) {
4. String string = “Dream big”;
5. //Stores the reverse of given string.
6. String reversedStr = “”;
7. //Iterate through the string from last and add each character to variable reversedStr.
8. for(int i = string.length()-1; i >= 0; i–){

How do you reverse a char array in Java?

Reverse a String using character array in Java

1. Create an empty character array of the same size as that of the given string.
2. Fill the character array backward with characters of the given string.
3. Finally, convert the character array into string using String. copyValueOf(char[]) and return it.

How can we reverse an array without TEMP variable?

Algorithm to Reverse String Without Temporary Variable

1. Store start index in low and end index in high.
2. Here, without creating a temp variable to swap characters, we use xor(^).
3. Traverse the input string “s”.
4. Swap from first variable to end using xor.
5. Return the final output string.

How do you reverse a string array in Java?

Method 3: Code to Reverse String Array in Java

1. Convert the String Array to the list using Arrays. asList() method.
2. Reverse the list using Collections.reverse() method.
3. Convert the list back to the array using list. toArray() method.