Given a strings, akduplicate removalconsists of choosingkadjacent and equal letters fromsand removing them causing the left and the right side of the deleted substring to concatenate together. We repeatedly makekduplicate removals onsuntil we no longer can. Return the final string after all such d...
The string /* denotes a block comment, which represents that all characters until the next (non-overlapping) occurrence of */should be ignored. (Here, occurrences happen in reading order: line by line from left to right.) To be clear, the string /*/ does not yet end the block comment,...
The string /* denotes a block comment, which represents that all characters until the next (non-overlapping) occurrence of/ should be ignored. (Here, occurrences happen in reading order: line by line from left to right.) To be clear, the string // does not yet end the block comment, a...
LeetCode 中关于括号的题目还是比较多的,比如 Valid Parentheses,Valid Parenthesis String,Remove Invalid Parentheses,和 Longest Valid Parentheses 等。大多都是考察如何判断一个括号字符串是否合法,所谓的合法,大致就是左右括号个数要相同,每个右括号前面必须要有对应的左括号,一个比较简单的判断方法就是用一个变量 ...