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]] = 0
for i in range(len(s)):
if s[i] in char_count:
char_count[s[i]] += 1
else:
char_count[s[i]] = 1
result = []
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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
if 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]] -=1
return ''.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;
}
};