Yearly Archives: 2026
Move All Odd Numbers to the End of an Array
Title: Move All Odd Numbers to the End of an ArrayIn this guide, you will learn how to rearrange an integer array so that...
Move Negative Numbers to the Left of an Array
Title: Move Negative Numbers to the Left of an ArrayIn this guide, you'll learn how to rearrange an integer array so that every negative...
Move All Zeros to the Beginning of an Array
Title: Move All Zeros to the Beginning of an ArrayRearranging an array in place is a classic interview question because it tests whether you...
Move All Zeros to the End of an Array
Title: Move All Zeros to the End of an ArrayMoving all the zeros in an array to the end, while keeping the other elements...
Rearrange Array so that arr[i] Becomes arr[arr[i]]
Title: Rearrange Array so that arr Becomes arr]If you are given an array where every value is itself a valid index into that same...
Rearrange Array in Zigzag Order
Title: Rearrange Array in Zigzag OrderIn this guide, we will explore how to rearrange an array in Java so its elements alternate between smaller...
Rearrange Array in Alternating Positive and Negative Order
Title: Rearrange Array in Alternating Positive and Negative OrderUnderstanding the ProblemIn this guide, you'll learn how to rearrange an array of integers so that...
Rearrange Even and Odd Numbers in an Array
Title: Rearrange Even and Odd Numbers in an ArrayRearranging an array so that every even number appears before every odd number is a classic...
Rearrange Positive and Negative Numbers in an Array
Title: Rearrange Positive and Negative Numbers in an ArrayRearranging positive and negative numbers in an array is a classic interview exercise that tests how...
Cyclically Rotate an Array
Title: Cyclically Rotate an ArrayIn this guide, you will learn how to cyclically rotate an array in Java by one position to the right....