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【每日一题】- 2020-01-15 - 925. 长按键入 #276

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azl397985856 opened this issue Jan 15, 2020 · 5 comments
Closed

【每日一题】- 2020-01-15 - 925. 长按键入 #276

azl397985856 opened this issue Jan 15, 2020 · 5 comments

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@azl397985856
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你的朋友正在使用键盘输入他的名字 name。偶尔,在键入字符 c 时,按键可能会被长按,而字符可能被输入 1 次或多次。

你将会检查键盘输入的字符 typed。如果它对应的可能是你的朋友的名字(其中一些字符可能被长按),那么就返回 True。

 

示例 1:

输入:name = "alex", typed = "aaleex"
输出:true
解释:'alex' 中的 'a' 和 'e' 被长按。
示例 2:

输入:name = "saeed", typed = "ssaaedd"
输出:false
解释:'e' 一定需要被键入两次,但在 typed 的输出中不是这样。
示例 3:

输入:name = "leelee", typed = "lleeelee"
输出:true
示例 4:

输入:name = "laiden", typed = "laiden"
输出:true
解释:长按名字中的字符并不是必要的。
 

提示:

name.length <= 1000
typed.length <= 1000
name 和 typed 的字符都是小写字母。

来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/long-pressed-name
著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。

@unclegem
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控制双指针对两个字符串进行字符比对即可。

    public boolean isLongPressedName(String name, String typed) {

        if (typed.length() < name.length())
            return false;
        int left = 0, right = 0;

        while (left < name.length() && right < typed.length()) {

            if (name.charAt(left) == typed.charAt(right)) {

                left++;
                right++;
            } else if (right > 0 && typed.charAt(right) == typed.charAt(right - 1))
                right++;
            else
                return false;
        }

        return left == name.length();
    }

@azl397985856
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Owner Author

@unclegem same idea Python Code

class Solution:
    def isLongPressedName(self, name: str, typed: str) -> bool:
        i = j = 0
        m = len(name)
        n = len(typed)
        if m > n:
            return False
        while i < m and j < n:
            if name[i] == typed[j]:
                i += 1
                j += 1
            elif typed[j] == typed[j - 1]:
                j += 1
            else:
                return False

        return i == m

@hhbszyc001
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public boolean isLongPressedName(String name, String typed) {

    if (typed.length() < name.length())
        return false;
    int left = 0, right = 0;

    while (left < name.length() && right < typed.length()) {

        if (name.charAt(left) == typed.charAt(right)) {

            left++;
            right++;
        } else if (right > 0 && typed.charAt(right) == typed.charAt(right - 1))
            right++;
        else
            return false;
    }

    return left == name.length();
}

@azl397985856
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Owner Author

@hhbszyc001 注意下格式

@stale
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stale bot commented Mar 27, 2020

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

@stale stale bot added the stale label Mar 27, 2020
@stale stale bot closed this as completed Apr 3, 2020
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