';
function smi2_array_rand(input, num_req) { var indexes = []; var ticks = num_req || 1; var checkDuplicate = function ( input, value ) { var exist = false, index = 0; while ( index < input.length ) { if ( input [ index ] === value ) { exist = true; break; } index++; } return exist; }; if ( input instanceof Array && ticks <= input.length ) { while ( true ) { var rand = Math.floor( ( Math.random( ) * input.length ) ); if ( indexes.length === ticks ) { break; } if ( !checkDuplicate( indexes, rand ) ) { indexes.push( rand ); } } } else { indexes = null; } return ( /*( ticks == 1 ) ? indexes.join( ) :*/ indexes ); }
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