Find maximum sum of subsequence after flipping signs of at most K elements in given Array | Java implementation for the above approach ; Function to calculate the max sum of subsequence ; Variable to store the max sum ; Sort the array ; Iterate over the array ; Flip sign ; Decrement k ; Traverse over the array ; Add only positive elements ; Return the max sum ; Driver Code ; Given array ; Variable to store number of flips are allowed ; Function call to find the maximum sum of subsequence
import java . util . * ; class GFG { static int maxSubseq ( int arr [ ] , int N , int K ) { int sum = 0 ; Arrays . sort ( arr ) ; for ( int i = 0 ; i < N ; i ++ ) { if ( K == 0 ) break ; if ( arr [ i ] < 0 ) { arr [ i ] = - arr [ i ] ; K -- ; } } for ( int i = 0 ; i < N ; i ++ ) if ( arr [ i ] > 0 ) sum += arr [ i ] ; return sum ; } public static void main ( String [ ] args ) { int [ ] arr = { 6 , - 10 , - 1 , 0 , - 4 , 2 } ; int K = 2 ; int N = arr . length ; System . out . println ( maxSubseq ( arr , N , K ) ) ; } }