text: Program for array rotation | Function to left Rotate arr [ ] of size n by 1 ; Function to left rotate arr [ ] of size n by d ; utility function to print an array ; Driver Code
code: < ? php function leftRotatebyOne ( & $ arr , $ n ) { $ temp = $ arr [ 0 ] ; for ( $ i = 0 ; $ i < $ n - 1 ; $ i ++ ) $ arr [ $ i ] = $ arr [ $ i + 1 ] ; $ arr [ $ n - 1 ] = $ temp ; } function leftRotate ( & $ arr , $ d , $ n ) { for ( $ i = 0 ; $ i < $ d ; $ i ++ ) leftRotatebyOne ( $ arr , $ n ) ; } function printArray ( & $ arr , $ n ) { for ( $ i = 0 ; $ i < $ n ; $ i ++ ) echo $ arr [ $ i ] . " ▁ " ; } $ arr = array ( 1 , 2 , 3 , 4 , 5 , 6 , 7 ) ; $ n = sizeof ( $ arr ) ; leftRotate ( $ arr , 2 , $ n ) ; printArray ( $ arr , $ n ) ; ? >