在上面的示例中,我们创建了一个长度为5的整型数组arr,并使用for循环为数组赋值。最后,我们遍历数组并打印出每个元素的值。 旅行图 journey title How to Create an Array and Add Values in Java section Create Array CreateArray(创建数组) AddValues(为数组赋值) PrintArray(打印数组) section For Loop ForLoop...
1. 使用 for-loop 复制数组元素 1int[] num1 = {1, 2, 3, 4, 5};2int[] num2 =newint[num1.length];3for(inti = 0; i < num1.length; i++) {4num2[i] =num1[i];5} 2. 使用System.arrayCopy() 1int[] num1 = {1, 2, 3, 4, 5};2int[] num2 =newint[num1.length];...
用for循环遍历数组(array)的例子: 在这里,我们使用for循环遍历和显示数组里面的每个元素。 1 2 3 4 5 6 7 8 9 classForLoopExample3 { publicstaticvoidmain(String args[]){ intarr[]={2,11,45,9}; //i starts with 0 as array index starts with 0 too for(inti=0; i<arr.length; i++){ ...
Loop->>Array: 开始循环 Loop->>Array: 取出第一个元素 Array-->>Loop: 返回元素值 Loop->>Array: 取出第二个元素 Array-->>Loop: 返回元素值 Loop->>Array: 取出第三个元素 Array-->>Loop: 返回元素值 Loop->>Array: 取出第四个元素 Array-->>Loop: 返回元素值 Loop->>Array: 取出第五个元素 ...
You can loop through the array elements with the for loop, and use the length property to specify how many times the loop should run.The following example outputs all elements in the cars array:ExampleGet your own Java Server String[] cars = {"Volvo", "BMW", "Ford", "Mazda"}; for ...
2. Java For-loop Example In the following program, we are iterating over an array ofintvalues. The array contains 5 elements so the loop will iterate 5 times, once for each value in the array. int[]array=newint[]{0,1,2,3,4};for(inti=0;i<array.length;i++){System.out.format(...
For Loop Structure Example – Incrementing Step Value Example – Decrementing Step Value Example – Multiple Loop Variables Example – No Initialization Example – No Step Value Example – Infinite Loop Example – Integer Array Example – String Characters Example – String Array Example – List Examp...
// Preferred idiom for iterating over a collection or arrayfor(Elemente:c){...// Do Someting with e} 如果需要访问迭代器,可能要调用它的 remove 方法,首选做法是利用传统的 for 循环替代 for-each 循环: // Idiom for iterating when you need the iteratorfor(Iterator<Element>i=c.iterator();i...
public class ForLoopArrayExample { public static void main(String[] args) { int[] numbers = {1, 2, 3, 4, 5}; for (int i = 0; i < numbers.length; i++) { System.out.println("Element at index " + i + " is " + numbers[i]); } } } 在这个示例中,numbers是一个整型...
forEach 不跟踪索引,内部使用迭代器实现,所以我们在循环过程中没办法获取到索引 代码语言:javascript 复制 for(int num:numbers){if(num==target){return???;// do not know the index of num}}For-each only iterates forward over the arrayinsingle steps// cannot be converted to a for-each loopfor...