Learn essential coding patterns to answer problems and prepare for tech companies' interviews.

Ace the JavaScript Coding Interview

This module teaches us the underlying patterns behind common coding interview questions. By learning these essential patterns, we'll be able to unpack and answer any problem the right way—just by assessing the problem statement. This approach was created by FAANG hiring managers to help us prepare for the typical rounds of interviews at major tech companies like Apple, Google, Meta, Microsoft, and Amazon.

By the end of this module, we'll have the skills we need to unlock even the most challenging questions, grok the coding interview, and level up our career with confidence.

Coding Interview Patterns

# Statement

We are given an $n×n$ binary matrix grid containing `0`s and `1`s. Each cell in the grid represents either land or water. A cell with a value of `1` represents land, while a cell with a value of `0` represents water. A group of adjacent cells with a value of `1` constitutes an island. Two cells are considered adjacent if one is above, below, to the left, or to the right of the other. Our task is to return the smallest number of `0`s we must flip to connect the two islands.

>**Note:** We may assume all four edges of the grid are surrounded by water.


**Constraints:**

- $2$ $\leq$ `n` $\leq$ $20$
- $n ==$ `grid.length` $==$ `grid[i].length`.

- `grid[i][j]` is either `0` or `1`.
- There are exactly two islands in the `grid`.

# Example






Try to solve the  Shortest Bridge problem.


Shortest Bridge

Try to solve the  Shortest Bridge problem.