java基础 学习笔记(一):continue break区别

continue break区别

定义

• break查询到数据后退出循环
• continue查询到数据后继续查询

代码对比

• 单重循环

  int[] array = {0,1,2,3,4,5,6,7,8,9};
  int nElems = array.length;
  int searchKey = 7;
  System.out.println("************break查询到数据后退出循环************");
  for(i=0; i < nElems;i++){
  System.out.print( i + "; ");
  if(searchKey == array[i]) {
  break;
  }
  }
  
  System.out.println("************continue查询到数据后继续查询************");
  for(i=0; i < nElems;i++){
  System.out.print( i + "; ");
  if(searchKey == array[i]) {
  continue;
  }
  }

  结果:
  

• 双重循环

  System.out.println("***********break外层循环等于7*************");
  int j=0,k=0;
  for(j=0; j < nElems;j++){
  System.out.print(j + ": ");
  for (k=0; k < nElems; k++){
  System.out.print(k + "; ");
  if(searchKey == j){
  System.out.print("找到7; ");
  break;
  }
  }
  System.out.println();
  }
  System.out.println();
  System.out.println("***********break内层循环等于7*************");
  for(j=0; j < nElems;j++){
  System.out.print(j + ": ");
  for (k=0; k < nElems; k++){
  System.out.print(k + "; ");
  if(searchKey == k){
  System.out.print("找到7; ");
  break;
  }
  }
  System.out.println();
  }
  System.out.println();
  System.out.println("***********continue外层循环等于7*************");
  for(j=0; j < nElems;j++){
  System.out.print(j + ": ");
  for (k=0; k < nElems; k++){
  System.out.print(k + "; ");
  if(searchKey == j){
  System.out.print("找到7; ");
  continue;
  }
  }
  System.out.println();
  }
  System.out.println();
  System.out.println("***********continue内层循环等于7*************");
  for(j=0; j < nElems;j++){
  System.out.print(j + ": ");
  for (k=0; k < nElems; k++){
  System.out.print(k + "; ");
  if(searchKey == k){
  System.out.print("找到7; ");
  continue;
  }
  }
  System.out.println();
  }

  结果: