DAY 5_DSA challange for 45 days

 DAY 5. DSA challange for 45 days 

March 20,2024

 Leetcode and geeksforgeeks questions and solutions

begin with simple and straightforward problems to test my concepts.

problem 1 : https://leetcode.com/problems/rotate-array/

solution:

var rotate = function(nums, k) {
k=k%nums.length
swap(nums,0,nums.length-1)
swap(nums,0,k-1)
swap(nums,k,nums.length-1)
return nums
};
function swap(arr,start,end){
while(start<end){
[arr[start],arr[end]]=[arr[end],arr[start]]
start++
end--
}
}

problem 2: https://www.geeksforgeeks.org/problems/bubble-sort/1
solution:
class Solution
{
   //Function to sort the array using bubble sort algorithm.
   bubbleSort(arr,n){
    //code here
    for(let i=0;i<n;i++){
        for(let j=0;j<n;j++){
            if(arr[j]>arr[j+1]){
                [arr[j],arr[j+1]]=[arr[j+1],arr[j]]
            }
        }
    }
    return arr
   }
    
}