How to get almost increasing sequence of integers in JavaScript ?

Strictly Increasing Sequence

A sequence of numbers is said to be in a strictly increasing sequence if every succeeding element in the sequence is greater than its preceding element.

We are required to write a JavaScript function that takes in an array of Numbers as the only argument. The function should check whether we can form a strictly increasing sequence of the numbers by removing no more than one element from the array.

Example

Following is the code −

const almostIncreasingSequence = (arr = []) => {
   if (isIncreasingSequence(arr)) {
      return true;
   };
   for (let i = 0; i < arr.length > 0; i++) {
      let copy = arr.slice(0);
      copy.splice(i, 1);
      if (isIncreasingSequence(copy)) {
         return true;
      };
   };
   return false;
};
const isIncreasingSequence = (arr = []) => {
   for (let i = 0; i < arr.length - 1; i++) {
      if (arr[i] >= arr[i + 1]) {
         return false;
      };
   };
   return true;
};
console.log(almostIncreasingSequence([1, 3, 2, 1]));
console.log(almostIncreasingSequence([1, 3, 2]));

Output

Following is the output on console −

false
true

AmitDiwan

Published on 10-Dec-2020 07:50:40

• Related Questions & Answers
• JavaScript: Check if array has an almost increasing sequence
• Strictly increasing sequence JavaScript
• Converting array into increasing sequence in JavaScript
• Finding nth element of an increasing sequence using JavaScript
• Building a lexicographically increasing sequence of first n natural numbers in JavaScript
• Removing least number of elements to convert array into increasing sequence using JavaScript
• How to get sequence number in loops with JavaScript?
• How to get the product of two integers without using * JavaScript
• How to create a sequence increasing by 1 in R?
• Longest path in 2-D that contains increasing sequence in JavaScript
• How to create a random vector of integers with increasing values only in R?
• C++ Program to Find the Longest Increasing Subsequence of a Given Sequence
• How to create an array of integers in JavaScript?
• How to sort an array of integers correctly JavaScript?
• How to sort an array of integers correctly in JavaScript?