text: Check if any subarray can be made palindromic by replacing less than half of its elements | A Utility Function to check if a subarray can be palindromic by replacing less than half of the elements present in it ; Stores frequency of array elements ; Traverse the array ; Update frequency of each array element ; Iterator over the Map ; If frequency of any element exceeds 1 ; If no repetition is found ; Function to check and print if any subarray can be made palindromic by replacing less than half of its elements ; Given array arr [ ] ; Size of array ; Function Call
code: function isConsistingSubarrayUtil ( arr , n ) { var mp = new Map ( ) ; for ( var i = 0 ; i < n ; ++ i ) { if ( mp . has ( arr [ i ] ) ) { mp . set ( arr [ i ] , mp . get ( arr [ i ] ) + 1 ) ; } else { mp . set ( arr [ i ] , 1 ) ; } } var ans = false ; mp . forEach ( ( value , key ) => { if ( value > 1 ) { ans = true ; } } ) ; if ( ans ) return true ; return false ; } function isConsistingSubarray ( arr , N ) { if ( isConsistingSubarrayUtil ( arr , N ) ) { document . write ( " " ) ; } else { document . write ( " " ) ; } } var arr = [ 1 , 2 , 3 , 4 , 5 , 1 ] ; var N = arr . length ; isConsistingSubarray ( arr , N ) ;