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| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
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prog1_11 [2013-04-30 14:08] Joakim Forsgren |
prog1_11 [2015-09-10 08:49] 127.0.0.1 external edit |
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| Line 66: | Line 66: | ||
| 10*. | 10*. | ||
| Skriv en rekursiv funktion **siffsum**, | Skriv en rekursiv funktion **siffsum**, | ||
| + | |||
| + | <php> | ||
| + | /* | ||
| + | <?php | ||
| + | function u1($n) { | ||
| + | if ($n == 1) { | ||
| + | return 4; | ||
| + | } | ||
| + | return 2*u1($n-1)-3; | ||
| + | } | ||
| + | echo "< | ||
| + | |||
| + | function u2($n) { | ||
| + | if ($n == 1) { | ||
| + | return 2.8; | ||
| + | } | ||
| + | return 1.12*u2($n-1); | ||
| + | } | ||
| + | echo "< | ||
| + | |||
| + | |||
| + | echo '< | ||
| + | function u3a($n) { | ||
| + | echo '< | ||
| + | if ($n == 1) { | ||
| + | return; | ||
| + | } | ||
| + | u3a($n-1); | ||
| + | } | ||
| + | u3a(5); | ||
| + | |||
| + | function u3b($n) { | ||
| + | if ($n == 1) { | ||
| + | echo '< | ||
| + | return; | ||
| + | } | ||
| + | u3b($n-1); | ||
| + | echo '< | ||
| + | } | ||
| + | u3b(5); | ||
| + | |||
| + | function u4($str, $antal){ | ||
| + | echo $antal . ':' | ||
| + | if ($antal == 1){ // Brytvillkor. | ||
| + | return; | ||
| + | } | ||
| + | u4($str, $antal-1); | ||
| + | |||
| + | } | ||
| + | echo '< | ||
| + | u4(' | ||
| + | |||
| + | |||
| + | function u5($b,$n) { | ||
| + | if ($n == 1) { | ||
| + | return $b; | ||
| + | } | ||
| + | return $b * u5($b, | ||
| + | } | ||
| + | echo "< | ||
| + | |||
| + | function u6($n) { | ||
| + | if ($n == 1) { | ||
| + | return $n; | ||
| + | } | ||
| + | return $n * u6($n-1); | ||
| + | } | ||
| + | echo "< | ||
| + | |||
| + | function u7($n) { | ||
| + | if ($n == 1) { | ||
| + | echo "$n x 7 = " . $n*7 . "< | ||
| + | return; | ||
| + | } | ||
| + | u7($n-1); | ||
| + | echo "$n x 7 = " . $n*7 . "< | ||
| + | } | ||
| + | echo "< | ||
| + | u7(10); | ||
| + | function u8($n1,$n2) { | ||
| + | if ($n1 > $n2) { | ||
| + | return; | ||
| + | } | ||
| + | u8($n1, | ||
| + | echo $n2 . ','; | ||
| + | } | ||
| + | echo "< | ||
| + | u8(3,6); | ||
| + | |||
| + | function u9($n) { | ||
| + | if ($n == 1) { | ||
| + | return 15000; | ||
| + | } | ||
| + | return 1.04*u9($n-1)+400; | ||
| + | } | ||
| + | echo "< | ||
| + | |||
| + | |||
| + | function u10($n) { | ||
| + | if ((int)($n/ | ||
| + | return $n; | ||
| + | } | ||
| + | return u10((int)($n/ | ||
| + | } | ||
| + | echo "< | ||
| + | */ | ||
| + | </ | ||