Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twice while 'r' and 't' both appear once. So 'e' must appear before both 'r' and 't'. Th…

Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twice while 'r' and 't' both appear once. So 'e' must appear before both 'r' and 't'. Th…

给定一个字符串,请将字符串里的字符按照出现的频率降序排列.示例 1:输入:"tree"输出:"eert"解释:'e'出现两次,'r'和't'都只出现一次.因此'e'必须出现在'r'和't'之前.此外,"eetr"也是一个有效的答案. 示例 2:输入:"cccaaa"输出:"cccaaa"解释:'c'和'a'都出现三次.此外,"aaaccc"也是有效的答案.注意"cacaca&q…

Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twice while 'r' and 't' both appear once. So 'e' must appear before both 'r' and 't'. Th…

根据字符出现频率排序 给定一个字符串,请将字符串里的字符按照出现的频率降序排列. 示例 1: 输入: "tree" 输出: "eert" 解释: 'e'出现两次,'r'和't'都只出现一次. 因此'e'必须出现在'r'和't'之前.此外,"eetr"也是一个有效的答案. 示例 2: 输入: "cccaaa" 输出: "cccaaa" 解释: 'c'和'a'都出现三次.此外,"aaaccc"…

451. 根据字符出现频率排序 给定一个字符串,请将字符串里的字符按照出现的频率降序排列. 示例 1: 输入: "tree" 输出: "eert" 解释: 'e'出现两次,'r'和't'都只出现一次. 因此'e'必须出现在'r'和't'之前.此外,"eetr"也是一个有效的答案. 示例 2: 输入: "cccaaa" 输出: "cccaaa" 解释: 'c'和'a'都出现三次.此外,"aaaccc…

Given a string s, sort it in decreasing order based on the frequency of the characters. The frequency of a character is the number of times it appears in the string. Return the sorted string. If there are multiple answers, return any of them. 考察了map的…

题目描述: 给定一个字符串,请将字符串里的字符按照出现的频率降序排列. 示例 1: 输入:"tree" 输出:"eert" 解释:'e'出现两次,'r'和't'都只出现一次.因此'e'必须出现在'r'和't'之前.此外,"eetr"也是一个有效的答案. 示例 2: 输入:"cccaaa" 输出:"cccaaa" 解释:'c'和'a'都出现三次.此外,"aaaccc"也是有效的答案.注意&…

Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twice while 'r' and 't' both appear once. So 'e' must appear before both 'r' and 't'. Th…

Given a string, sort it in decreasing order based on the frequency of characters. Example 1: Input: "tree" Output: "eert" Explanation: 'e' appears twice while 'r' and 't' both appear once. So 'e' must appear before both 'r' and 't'. Th…