回答編集履歴
1
追記
test
CHANGED
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@@ -65,3 +65,69 @@
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65
65
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}
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66
66
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67
67
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```
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68
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69
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[別解]
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70
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71
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```C++
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72
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73
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#include <iostream>
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74
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75
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#include <vector>
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76
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77
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#include <memory>
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78
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79
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80
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81
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class foo {
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82
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83
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int n_;
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84
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85
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public:
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86
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87
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foo(int n) : n_(n) { std::cout << " foo(" << n_ << ")\n"; }
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88
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89
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~foo() { std::cout << "~foo(" << n_ << ")\n"; }
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90
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91
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int get() const { return n_; }
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92
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};
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94
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95
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96
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int main(){
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98
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std::vector<std::unique_ptr<foo>> vec;
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100
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101
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for ( int i = 0; i < 10; ++i ) {
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102
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103
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vec.push_back(std::make_unique<foo>(i));
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104
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105
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}
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106
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107
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std::cout << "奇数を削除\n";
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108
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109
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for ( auto iter = vec.begin(); iter != vec.end(); ) {
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110
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111
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if ( (*iter)->get() % 2 ) {
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112
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113
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iter = vec.erase(iter);
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114
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115
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} else {
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116
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++iter;
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118
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119
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}
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120
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121
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}
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122
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std::cout << "残ったのを削除\n";
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124
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125
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while ( !vec.empty() ) {
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126
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vec.pop_back();
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128
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129
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}
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130
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131
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}
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132
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133
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```
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