int[] sales =newint[]{16,26,36,6,100};int result =0;for(int i=0; i<sales.length; i++){
result += sales[i];}System.out.println(result);
privateintgetMax(int[] array){int max = array[0];for(int i =0; i < array.length; i++){if(array[i]>max){
max = array[i];}}return max;}
Random rd =newRandom();Scanner sc =newScanner(System.in);int[] randoms =newint[5];for(int i =0; i < randoms.length; i++){
randoms[i]= rd.nextInt(20+1);}boolean flag =false;for(;;){System.out.println("请输入数据:");int guessNumber = sc.nextInt();for(int i =0; i < randoms.length; i++){if(guessNumber==randoms[i]){
flag =true;break;}}if(flag){break;}}System.out.println("您猜中了");System.out.println("生成的随机数为:");System.out.println(Arrays.toString(randoms));
流程控制
分支结构
switch
循环结构
求1到10 的奇数和
int result =0;for(int i =1; i <=10; i++){if(i %2==1){
result += i;}}
水仙花数
同时还要知道水仙花数的个数
int count =0;for(int i=100; i<=999; i++){int ge = i %10;int shi = i /10%10;int bai = i /100;if(Math.pow(ge,3)+Math.pow(shi,3)+Math.pow(bai,3)== i){//其中这个==进行了自动类型转换
count++;System.out.println(i);}}System.out.println(count);