avoidObstacles

jumps.js

/**
You are given an array of integers representing coordinates of obstacles situated on a straight line.

Assume that you are jumping from the point with coordinate 0 to the right. You are allowed only to make jumps of the same length represented by some integer.

Find the minimal length of the jump enough to avoid all the obstacles.

Example

For inputArray = [5, 3, 6, 7, 9], the output should be avoidObstacles(inputArray) = 4.
*/



function avoidObstacles(inputArray) {

    let max = Math.max(...inputArray)
    let jump = 2
    
    for(; jump<=max; jump++){
        
        if(jumps(jump, max, inputArray)){
            return jump 
        }
        
    }
    
    return jump++
    
}

function jumps(jump, max, inputArray){
    
    let pos = 0 + jump
    
    while(pos <= max){
        
        if(inputArray.includes(pos)){
            return false    
        }
        
        pos += jump
    }
    
    return true
    
}