1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
|
#include "line_accumulator.h"
#include <iostream>
#include <algorithm>
namespace {
std::uint8_t getRandomIndex(
std::mt19937& random,
const std::uint8_t n
) {
return std::uniform_int_distribution<std::uint8_t>{0, n}(random);
}
std::vector<std::uint8_t> getRandomIndizes(
std::mt19937& random,
const std::uint8_t n
) {
std::vector<std::uint8_t> indizes(n);
std::iota(indizes.begin(), indizes.end(), 0);
std::shuffle(
indizes.begin(),
indizes.end(),
random
);
return indizes;
}
}
LineAccumulator::LineAccumulator(const std::uint8_t max_length):
max_length_{max_length},
device_{},
random_{device_()},
length_{0},
tokens_{} { }
LineAccumulator::~LineAccumulator() {
this->discharge(false);
}
std::uint8_t LineAccumulator::getMissing() const {
return this->max_length_ - this->length_;
}
void LineAccumulator::operator()(const std::string& word) {
if ( ( this->length_ + word.length() ) > this->max_length_ ) {
this->discharge(true);
}
this->tokens_.emplace_back(word, 0);
this->length_ += word.length();
if ( this->length_ < this->max_length_ ) {
this->tokens_.back().second += 1;
this->length_ += 1;
}
}
void LineAccumulator::justify() {
switch ( this->tokens_.size() ) {
case 0:
case 1: {
this->length_ = this->max_length_;
break;
}
case 2: {
this->tokens_[0].second += this->getMissing();
this->length_ = this->max_length_;
break;
}
default: {
const std::uint8_t base = this->getMissing()
/ (this->tokens_.size() - 2);
std::for_each(
this->tokens_.begin(),
this->tokens_.end() - 2,
[&, base](auto& token) {
token.second += base;
this->length_ += base;
}
);
break;
}
}
switch ( this->getMissing() ) {
case 0: {
break;
}
case 1: {
this->tokens_[
getRandomIndex(this->random_, this->tokens_.size() - 2)
].second += 1;
break;
}
default: {
const auto indizes = getRandomIndizes(
this->random_,
this->tokens_.size() - 2
);
std::for_each(
indizes.begin(),
indizes.begin() + this->getMissing(),
[&](std::uint8_t x) {
this->tokens_[x].second += 1;
this->length_ += 1;
}
);
break;
}
}
}
void LineAccumulator::discharge(const bool full) {
this->length_ -= this->tokens_.back().second;
this->tokens_.back().second = 0;
if ( full ) {
this->justify();
}
for ( const auto& token : this->tokens_ ) {
std::cout << token.first
<< std::string(token.second, ' ');
}
std::cout << '\n';
this->length_ = 0;
this->tokens_.clear();
}
|
