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Check if the elements of the array can be rearranged to form a sequence of numbers or not in JavaScript
We are required to write a JavaScript function that takes in an array of numbers and checks if the elements of the array can be rearranged to form a sequence of numbers or not.
For example: If the array is −
const arr = [3, 1, 4, 2, 5];
Then the output should be true.
Therefore, let’s write the code for this function −
Example
The code for this will be −
const arr = [3, 1, 4, 2, 5];
const canBeConsecutive = (arr = []) => {
if(!arr.length){
return false;
};
const copy = arr.slice();
copy.sort((a, b) => a - b);
for(let i = copy[0], j = 0; j < copy.length; i++, j++){
if(copy[j] === i){
continue;
};
return false;
};
return true;
};
console.log(canBeConsecutive(arr));Output
The output in the console will be −
true
Updated on: 17-Oct-2020
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