1 | // |
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2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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3 | // |
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4 | // The contents of this file are covered under the licence agreement in the |
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5 | // file "LICENCE" distributed with Cforall. |
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6 | // |
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7 | // searchsort.cfa -- |
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8 | // |
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9 | // Author : Peter A. Buhr |
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10 | // Created On : Thu Feb 4 18:17:50 2016 |
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11 | // Last Modified By : Peter A. Buhr |
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12 | // Last Modified On : Wed Dec 5 08:18:42 2018 |
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13 | // Update Count : 106 |
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14 | // |
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15 | |
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16 | #include <fstream.hfa> |
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17 | #include <stdlib.hfa> // bsearch, qsort |
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18 | #include <stdlib.h> // C version of bsearch |
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19 | |
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20 | int comp( const void * t1, const void * t2 ) { return *(int *)t1 < *(int *)t2 ? -1 : *(int *)t2 < *(int *)t1 ? 1 : 0; } |
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21 | |
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22 | int main( void ) { |
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23 | const int size = 10; |
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24 | int iarr[size]; |
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25 | |
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26 | sout | nlOff; // turn off auto newline |
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27 | |
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28 | for ( i; 0 ~ size ) { |
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29 | iarr[i] = size - i; |
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30 | sout | iarr[i] | ", "; |
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31 | } // for |
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32 | sout | nl; |
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33 | |
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34 | // ascending sort/search by changing < to > |
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35 | qsort( iarr, size ); |
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36 | for ( i; 0 ~ size ) { |
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37 | sout | iarr[i] | ", "; |
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38 | } // for |
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39 | sout | nl; |
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40 | for ( i; 0 ~ size ) { // C version |
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41 | int key = size - i; |
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42 | int * v = bsearch( &key, iarr, size, sizeof( iarr[0] ), comp ); |
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43 | sout | key | ':' | *v | ", "; |
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44 | } // for |
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45 | sout | nl; |
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46 | |
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47 | for ( i; 0 ~ size ) { |
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48 | int * v = bsearch( size - i, iarr, size ); |
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49 | sout | size - i | ':' | *v | ", "; |
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50 | } // for |
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51 | sout | nl; |
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52 | for ( i; 0 ~ size ) { |
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53 | unsigned int posn = bsearch( size - i, iarr, size ); |
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54 | sout | size - i | ':' | iarr[posn] | ", "; |
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55 | } // for |
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56 | sout | nl; |
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57 | |
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58 | // descending sort/search by changing < to > |
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59 | for ( i; 0u ~ size ) { |
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60 | iarr[i] = i + 1; |
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61 | sout | iarr[i] | ", "; |
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62 | } // for |
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63 | sout | nl; |
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64 | { |
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65 | // redefinition of ?<? can't overlap the loop controls: |
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66 | { |
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67 | int (*?<?)(int, int) = ?>?; |
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68 | qsort( iarr, size ); |
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69 | } |
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70 | for ( i; 0 ~ size ) { |
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71 | sout | iarr[i] | ", "; |
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72 | } // for |
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73 | sout | nl; |
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74 | for ( i; 0 ~ size ) { |
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75 | int (*?<?)(int, int) = ?>?; |
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76 | int * v = bsearch( size - i, iarr, size ); |
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77 | sout | size - i | ':' | *v | ", "; |
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78 | } // for |
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79 | sout | nl; |
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80 | for ( i; 0 ~ size ) { |
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81 | int (*?<?)(int, int) = ?>?; |
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82 | unsigned int posn = bsearch( size - i, iarr, size ); |
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83 | sout | size - i | ':' | iarr[posn] | ", "; |
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84 | } // for |
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85 | } |
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86 | sout | nl; |
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87 | |
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88 | double darr[size]; |
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89 | for ( i; 0 ~ size ) { |
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90 | darr[i] = size - i + 0.5; |
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91 | sout | darr[i] | ", "; |
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92 | } // for |
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93 | sout | nl; |
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94 | qsort( darr, size ); |
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95 | for ( i; 0 ~ size ) { |
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96 | sout | darr[i] | ", "; |
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97 | } // for |
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98 | sout | nl; |
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99 | for ( i; 0 ~ size ) { |
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100 | double * v = bsearch( size - i + 0.5, darr, size ); |
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101 | sout | size - i + 0.5 | ':' | *v | ", "; |
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102 | } // for |
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103 | sout | nl; |
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104 | for ( i; 0 ~ size ) { |
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105 | unsigned int posn = bsearch( size - i + 0.5, darr, size ); |
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106 | sout | size - i + 0.5 | ':' | darr[posn] | ", "; |
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107 | } // for |
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108 | sout | nl; |
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109 | |
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110 | struct S { int i, j; } sarr[size]; |
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111 | int ?<?( S t1, S t2 ) { return t1.i < t2.i && t1.j < t2.j; } |
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112 | ofstream & ?|?( ofstream & os, S v ) { return os | v.i | ' ' | v.j; } |
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113 | for ( i; 0 ~ size ) { |
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114 | sarr[i].i = size - i; |
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115 | sarr[i].j = size - i + 1; |
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116 | sout | sarr[i] | ", "; |
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117 | } // for |
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118 | sout | nl; |
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119 | qsort( sarr, size ); |
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120 | for ( i; 0 ~ size ) { |
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121 | sout | sarr[i] | ", "; |
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122 | } // for |
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123 | sout | nl; |
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124 | for ( i; 0 ~ size ) { |
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125 | S temp = { size - i, size - i + 1 }; |
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126 | S * v = bsearch( temp, sarr, size ); |
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127 | sout | temp | ':' | *v | ", "; |
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128 | } // for |
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129 | sout | nl; |
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130 | for ( i; 0 ~ size ) { |
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131 | S temp = { size - i, size - i + 1 }; |
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132 | unsigned int posn = bsearch( temp, sarr, size ); |
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133 | sout | temp | ':' | sarr[posn] | ", "; |
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134 | } // for |
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135 | sout | nl; |
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136 | { |
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137 | int getKey( const S & s ) { return s.j; } |
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138 | for ( i; 0 ~ size ) { |
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139 | sout | sarr[i] | ", "; |
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140 | } // for |
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141 | sout | nl; |
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142 | for ( i; 0 ~ size ) { |
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143 | S * v = bsearch( size - i + 1, sarr, size ); |
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144 | sout | size - i + 1 | ':' | *v | ", "; |
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145 | } // for |
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146 | sout | nl; |
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147 | for ( i; 0 ~ size ) { |
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148 | unsigned int posn = bsearch( size - i + 1, sarr, size ); |
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149 | sout | size - i + 1 | ':' | sarr[posn] | ", "; |
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150 | } // for |
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151 | sout | nl; |
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152 | } |
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153 | } // main |
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154 | |
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155 | // Local Variables: // |
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156 | // tab-width: 4 // |
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157 | // compile-command: "cfa searchsort.cfa" // |
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158 | // End: // |
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