Noble integers in an array ( count of greater elements is equal to value ) | Returns a Noble integer if present , else returns - 1. ; Return a Noble element if present before last . ; In case of duplicates , we reach last occurrence here . ; Driver code
< ? php function nobleInteger ( $ arr ) { sort ( $ arr ) ; $ n = count ( $ arr ) ; for ( $ i = 0 ; $ i < $ n - 1 ; $ i ++ ) { if ( $ arr [ $ i ] == $ arr [ $ i + 1 ] ) continue ; if ( $ arr [ $ i ] == $ n - $ i - 1 ) return $ arr [ $ i ] ; } if ( $ arr [ $ n - 1 ] == 0 ) return $ arr [ $ n - 1 ] ; return -1 ; } $ arr = array ( 10 , 3 , 20 , 40 , 2 ) ; $ res = nobleInteger ( $ arr ) ; if ( $ res != -1 ) echo " The ▁ noble ▁ integer ▁ is ▁ " , $ res ; else echo " No ▁ Noble ▁ Integer ▁ Found " ; ? >