text: Function to return maximum sum of a sub - array
code: function kadaneAlgorithm ( ar , n ) { let sum = 0 , maxSum = 0 ; for ( let i = 0 ; i < n ; i ++ ) { sum += ar [ i ] ; if ( sum < 0 ) sum = 0 ; maxSum = Math . max ( maxSum , sum ) ; } return maxSum ; }