Backspace String Compare
看两个string是不是相同, string里的#号是删除下一个字符.
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class Solution { public boolean backspaceCompare(String S, String T) { StringBuffer sb1 = new StringBuffer(S); StringBuffer sb2 = new StringBuffer(T); sb1.reverse(); sb2.reverse(); return modify(sb1).equals(modify(sb2)); } private String modify(StringBuffer sb) { int skip = 0; StringBuffer tmp = new StringBuffer(); for(int i = 0 ; i < sb.length(); i++) { if(sb.charAt(i) == '#') { skip++; continue; } else if(skip > 0){ skip--; continue; } else{ tmp.append(sb.charAt(i)); } } System.out.println(tmp.toString()); return tmp.toString(); } } |