力扣题:字符的统计-12.2

力扣题-12.2

[力扣刷题攻略] Re：从零开始的力扣刷题生活

力扣题1：423. 从英文中重建数字

解题思想：有的单词通过一个字母就可以确定，依次确定即可

class Solution(object):def originalDigits(self, s):""":type s: str:rtype: str"""char_count = {}t = 'egfihonsrutwvxz'for i in range(len(t)):char_count[t[i]] = 0for i in range(len(s)):if s[i] in char_count:char_count[s[i]] += 1else:char_count[s[i]] = 1result = []if char_count['z']!=0:for i in range(char_count['z']):result.append(0)temp = 'zero'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['x']!=0:for i in range(char_count['x']):result.append(6)temp = 'six'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['w']!=0:for i in range(char_count['w']):result.append(2)temp = 'two'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['g']!=0:for i in range(char_count['g']):result.append(8)temp = 'eight'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['s']!=0:for i in range(char_count['s']):result.append(7)temp = 'seven'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['h']!=0:for i in range(char_count['h']):result.append(3)temp = 'three'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['v']!=0:for i in range(char_count['v']):result.append(5)temp = 'five'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['f']!=0:for i in range(char_count['f']):result.append(4)temp = 'four'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['o']!=0:for i in range(char_count['o']):result.append(1)temp = 'one'for i in range(len(temp)):char_count[temp[i]] -=1if char_count['i']!=0:for i in range(char_count['i']):result.append(9)temp = 'nine'for i in range(len(temp)):char_count[temp[i]] -=1return ''.join(map(str, sorted(result)))

class Solution {public:std::string originalDigits(std::string s) {std::unordered_map<char, int> charCount;std::string t = "egfihonsrutwvxz";for (char c : t) {charCount[c] = 0;}for (char c : s) {if (charCount.find(c) != charCount.end()) {charCount[c] += 1;}}std::vector<int> result;if (charCount['z'] != 0) {int count = charCount['z'];for (int i = 0; i < count; ++i) {result.push_back(0);std::string temp = "zero";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['x'] != 0) {int count = charCount['x'];for (int i = 0; i < count; ++i) {result.push_back(6);std::string temp = "six";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['w'] != 0) {int count = charCount['w'];for (int i = 0; i < count; ++i) {result.push_back(2);std::string temp = "two";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['g'] != 0) {int count = charCount['g'];for (int i = 0; i < count; ++i) {result.push_back(8);std::string temp = "eight";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['s'] != 0) {int count = charCount['s'];for (int i = 0; i < count; ++i) {result.push_back(7);std::string temp = "seven";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['h'] != 0) {int count = charCount['h'];for (int i = 0; i < count; ++i) {result.push_back(3);std::string temp = "three";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['v'] != 0) {int count = charCount['v'];for (int i = 0; i < count; ++i) {result.push_back(5);std::string temp = "five";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['f'] != 0) {int count = charCount['f'];for (int i = 0; i < count; ++i) {result.push_back(4);std::string temp = "four";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['o'] != 0) {int count = charCount['o'];for (int i = 0; i < count; ++i) {result.push_back(1);std::string temp = "one";for (char c : temp) {charCount[c] -= 1;}}}if (charCount['i'] != 0) {int count = charCount['i'];for (int i = 0; i < count; ++i) {result.push_back(9);std::string temp = "nine";for (char c : temp) {charCount[c] -= 1;}}}std::sort(result.begin(), result.end());std::string resultString;for (int digit : result) {resultString += std::to_string(digit);}return resultString;}};