7设有数组定义:int MyIntArray[ ] = { , 20 , 30 , 40 , 50 , 60 , 70}; 则执行以下几个语句后的输出结果是____.for ( int i = 0 i < MyIntArray.length i + + ) if ( i % 2 = = 1 ) s += MyIntArray[i] System.out.println( s )for ( int i = 0 i < MyIntArray.length i + + ) if ( i % 2 = = 1 ) s += MyIntArray[i] System.out.println( s )