int count = 0; while (count < 5) { System.out.println("count的值为:" + count); count++; } for循环: for循环是一种在给定初始条件、循环条件和循环迭代表达式的情况下,重复执行代码块的循环结构。在每次循环开始前,会执行初始条件,然后判断循环条件是否为真,如果为真则执行循环内的代码...
public class ForLoopExample { public static void main(String[] args) { for (int i = 0; i < 5; i++) { System.out.println("i = " + i); } } } 2. while 循环 while 循环用于在条件为真时重复执行代码块。 java public class WhileLoopExample { public static void main(String[] args...
4. Difference betweenWhile-loop andFor-loop Unlike thefor-loopstatement, the condition-expression inwhileloop statement is not optional.In general, afor-loopstatement can be converted to awhile-loopstatement. However, not allfor-loopstatements can be converted to awhile-loopstatement. The following...
The first part is the starting position of a variable that counts the number of loops. The second part tells the for loop how many times to loop. The third part tells the for loop how to count. In our case we're counting up by one, but that does not have to be the case. You c...
Java For and While LoopsThis handout introduces the basic structure and use of Java for and while loops with example code an exercises. See also the associated CodingBat java loop practice problems using strings and arrays. Written by Nick Parlante. ...
The while loop loops through a block of code as long as a specified condition is true:SyntaxGet your own Java Server while (condition) { // code block to be executed } In the example below, the code in the loop will run, over and over again, as long as a variable (i) is less ...
end loop; declare--声明部分inumber;begin--代码开始i :=1;whilei<20loop--循环开始dbms_output.put_line(i);--输出语句i :=i+1;endloop;--循环结束end;--结束部分 案例3:for循环语法: for 变量 in 范围 loop 执行的语句; end loop; declare--声明部分inumber;begin--代码开始foriin1..30loop--...
—for循环 –语法结构: declare –声明部分 begin –逻辑部分 for 循环变量 in 循环下限 … 循环上限 loop –循环体 end loop; end; –需要注意的是: 1、循环变量从 循环下限的值开始,每次递增1 直到循环上限的值为止 --所以循环下限跟循环上限一般都是用数字 ...
The while loop to find the Largest Number can be shortened by using a for loop instead: Click for Complex Loop Note that the action in theforloop can increase or decrease the index by any amount. Although you neverneedaforloop, you should use it instead of awhileloop when possible, sinc...
FORALL语句具有如下结构 FORALL loop_counter IN bounds_clauseSQL_STATEMENT [SAVE EXCEPTIONS]; 1. 其中,bounds_clause是下面形式之一 lower_limit..upper_limit 就是 1..10INDICES OF collection_name BETWEEN lower_limit..upper_limitVALUES OF collection_name ...