Java|java教程
Java,字符串,是否
Java-java教程java 判断字符串是否包含子串的方法
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方法一:
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String str1 = "nihaoksdoksad "; String str2 = "ok "; int total = 0; for (String tmp = str1; tmp != null&&tmp.length()> =str2.length();){ if(tmp.indexOf(str2) == 0){total ++; } tmp = tmp.substring(1); } System.out.println(str1+ "中含有 "+total+ "个 "+str2);
方法二:
String str1 = "nihaokokosdokosad "; String str2 = "oko "; int total = 0; for (String tmp = str1; tmp != null&&tmp.length()> =str2.length();){ if(tmp.indexOf(str2) == 0){total ++;tmp = tmp.substring(str2.length()); }else{tmp = tmp.substring(1); } } System.out.println(str1+ "中含有 "+total+ "个 "+str2);
方法三:
String str1 = "nihaoksdoksad "; char []c=str1.toCharArray(); int total=0; for(int i=0;i <c.length-1;i++) if(c[i]== o &&c[i+1]== k ) total++; System.out.println(str1+ "中含有 "+total+ "个ok ");