int indexOf(String str) 1. 核心查找代码: for (int i = sourceOffset + fromIndex; i <= max; i++) { /* Look for first character. */ if (source[i] != first) { while (++i <= max && source[i] != first); } /* Found first character, now look at the rest of v2 */ if ...
1publicclassStringCompareMethod {2publicstaticvoidmain(String args[]){3String str1 = "elapant";4String str2 = "ELEPANT";//定义两个字符串5String str3 = "Apple";6String str4 = "apple";7/***1、compareTo方法***/8//不忽略字符串字符大小写9if(str1.compareTo(str2)>0){10System.out....
* 因为在String类中会多次使用,所以封装为私有方法*/privateintindexOfSupplementary(intch,intfromIndex) {if(Character.isValidCodePoint(ch)) {finalchar[] value =this.value;finalcharhi =Character.highSurrogate(ch);finalcharlo =Character.lowSurrogate(ch);finalintmax = value.length - 1;for(inti = fro...
int indexOf(int ch, int fromIndex): It returns the index within this string of the first occurrence of the specified character, starting the search at the specified index. int indexOf(int ch, int fromIndex):它返回指定字符首次出现在此字符串中的索引,从指定索引处开始搜索。 int indexOf(int ch...
append(Character.toLowerCase(c)); } return sb.toString(); } /** * 是否包含字符串 * * @param str 验证字符串 * @param strs 字符串组 * @return 包含返回true */ public static boolean inStringIgnoreCase(String str, String... strs) { if (str != null && strs != null) { for (...
Here are some other String methods for finding characters or substrings within a string. The String class provides accessor methods that return the position within the string of a specific character or substring: indexOf() and lastIndexOf(). The indexOf() methods search forward from the beginni...
for (int i = 0; i < n; i++) { if (v1[i] != cs.charAt(i)) { return false; } } //以上代码都不成立,走到最后直接返回true return true; } 私有方法,非同步方式(线程不安全)比较与 AbstractStringBuilder 是否相等,实则是与其子类:StringBuffer, StringBuilder 比较大小,contentEquals(CharSequence...
Index values refer to char code units, so a supplementary character uses two positions in a String. The String class provides methods for dealing with Unicode code points (i.e., characters), in addition to those for dealing with Unicode code units (i.e., char values). Unless otherwise...
public int searchSpaceSum(String str) { int sum = 0; for (int i = 0, j = str.length(); i < j; i++) { if (str.charAt(i) == ' ') // if (Character.isWhitespace(Character.valueOf(str.charAt(i))); ++sum; } return sum; }...
repeat('a',2));}}替换public static String replace(final String text, final String searchString,...