SELECT TRIM(' 去除前后空格 ') FROM DUAL; SELECT REPLACE(' 去除 任意位置的空格 ', ' ', '') FROM DUAL; 扩展: 1,both, trailing, leading (1)默认为删除空格 --结果:<test> SELECT TRIM(BOTH FROM ' test ') FROM DUAL; --结果:< test> SELECT TRIM(TRAILING FROM ' test ') FROM DUAL; -…
indexOf函数 package com.tj; public class MyClass implements Cloneable { public static void main(String[] args) { String string = "madam, i am Adam"; //字符a第一次出现的位置下标 int index = string.indexOf('a'); System.out.println(index); //字符a最后一次出现的位置下标 index…
; multi-segment executable file template. data segment ; add your data here! pkey db "press any key...$" STRING DB 'The date is FEB&03$' ends stack segment dw dup() ends code segment start: ; set segment registers: mov ax, data mov ds, ax mo…
检测传入字符串是否存在重复字符,返回boolean,比如"abc"返回true:"aac"返回false 这里提供两种思路: 第一种: import java.util.HashSet; import java.util.Set; public class Test { public static boolean checkDifferent2(String iniString) { //将参数的每一个字符都写入数组 String[] a = iniString.s…