用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 `est|C '+
插入排序: 0p89: I*0
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package org.rut.util.algorithm.support; yCCrK@{oo
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import org.rut.util.algorithm.SortUtil; F5S@I;
/** }@.|?2b +
* @author treeroot FLEo*9u>b
* @since 2006-2-2 W`^@)|9^)
* @version 1.0 G@j0rnn>B
*/ hlt[\LP=$
public class InsertSort implements SortUtil.Sort{ n_'{^6*O
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/* (non-Javadoc) Uix6GT;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z0l+1iMx
*/ K_&4D'
public void sort(int[] data) { QY= = GfHt
int temp; V')0 Mr
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); $ImrOf^qt
} Y`?-VaY
} Agrk|wPK
} \6\<~UX^
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} DK}"b}Fvq
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冒泡排序: {T].]7Z
D= 7c(
package org.rut.util.algorithm.support; >t7x>_~
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import org.rut.util.algorithm.SortUtil; F:a ILx
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/** <_Q1k>
* @author treeroot d^`?ed\1
* @since 2006-2-2 }V\N16f
* @version 1.0 m^qBxA
*/ H=
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public class BubbleSort implements SortUtil.Sort{ zP<pEI
<I;2{*QI2
/* (non-Javadoc) ZRYEqSm
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !F?XLekTi
*/ }\C-}
Q
public void sort(int[] data) { %iw3oh&Fkm
int temp; 9?k_y ZV
for(int i=0;i for(int j=data.length-1;j>i;j--){ }u1O#L}F5
if(data[j] SortUtil.swap(data,j,j-1); Vx-7\NB
} =G]@+e
} t45Z@hmcW
} 0iJue&
} |ZQ@fmvL/p
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} aM;W$1h
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选择排序: #Skv(IL
M'/aZ#
b
package org.rut.util.algorithm.support; 4"Hye&O
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import org.rut.util.algorithm.SortUtil; ~zw]5|
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/** A=
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* @author treeroot Nv"EV;$
* @since 2006-2-2 )RcL/n
* @version 1.0 yxc=Z0~1
*/ V(E/'DR
public class SelectionSort implements SortUtil.Sort { $.bBFWk
9H%X2#:fH
/* &y#r;L<9
* (non-Javadoc) VJS8)oI~
* +$Rt+S BD
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I"`M@ %
*/ 9VbOQ {8
public void sort(int[] data) { {`w;39$+
int temp; t2"FXTAq
for (int i = 0; i < data.length; i++) { vI@%Fg+D
int lowIndex = i; wiBVuj#
for (int j = data.length - 1; j > i; j--) { FJd]D[h
if (data[j] < data[lowIndex]) { qcT'nZ:
lowIndex = j; ,#8e_3Z$
} 3*@5S]]
} ^urDoB:
SortUtil.swap(data,i,lowIndex); bAx?&$
} `HBf&Z
} OD_W8!-
d \35a4l
} GDuMY\1
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Shell排序: )Qvk*9OS
CJ++?hB]X
package org.rut.util.algorithm.support; 28=O03q
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import org.rut.util.algorithm.SortUtil; 6VhjJJ
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/** R,Vd.-5M
* @author treeroot /Js7`r=Rx
* @since 2006-2-2 CH<E,Z
C1T
* @version 1.0 b?'yAXk
*/ +j4"!:N}B
public class ShellSort implements SortUtil.Sort{ 'f?$"U JF
{ .?/)
/* (non-Javadoc) 71{p+3Z&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k|!EDze43?
*/ NrJKbk^4u/
public void sort(int[] data) { R`~z0d.
for(int i=data.length/2;i>2;i/=2){ 9cj9SB4
for(int j=0;j insertSort(data,j,i); LA)[ip4
} %?Ev|:i`@
} ~T89_L
insertSort(data,0,1); mN19WQ(r
} lMbAs.!
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/** f1(+
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* @param data #KiRfx4G
* @param j }3L@J8:D"
* @param i A\.GV1
*/ 'Un" rts
private void insertSort(int[] data, int start, int inc) { )[|3ZP`
int temp; y?q*WUh
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 0/oyf]HR
} 9,"L^W8"k
} ,11H.E
Z
} *C:|X b<9
@Rw!'T
} c7FRI0X
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快速排序: TG5XSy
P->y_4O
package org.rut.util.algorithm.support; ]: ~OG@(
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import org.rut.util.algorithm.SortUtil; Ht4;5?/y
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/** ,c)uX#1
* @author treeroot 4%3Mb-#Y]
* @since 2006-2-2 QhK#Y{xY
* @version 1.0 SE~[bT
*/ >lIk9|
public class QuickSort implements SortUtil.Sort{ PxS8 n?y
!dC<4qZ\C
/* (non-Javadoc) x3"#POp
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |1>*;\o-
*/ JC3m.)/
public void sort(int[] data) { >L
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quickSort(data,0,data.length-1); h^o{@/2
} <z!CDg4
private void quickSort(int[] data,int i,int j){ [n$BRk|
int pivotIndex=(i+j)/2; UQI]>#_/v
file://swap hHMN6i
SortUtil.swap(data,pivotIndex,j); byfJy^8G
iS<I0\D
int k=partition(data,i-1,j,data[j]);
MEGv}
SortUtil.swap(data,k,j); O~^"
if((k-i)>1) quickSort(data,i,k-1); Os1>kwC
if((j-k)>1) quickSort(data,k+1,j); n0e1k.A
]h5Yg/sms
} YS%h^>I^
/** y)@[Sl>
* @param data \0f{S40
* @param i W0]gLw9*
* @param j 5qP:/*+
* @return qDfd. gL
*/ [F6U+1n8e
private int partition(int[] data, int l, int r,int pivot) { #: [<iSk
do{ Ch3jxgQY
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U b* wuI
SortUtil.swap(data,l,r); #Q`dku%V:
} &E=>Hj(dTG
while(l SortUtil.swap(data,l,r); LMAE)]N
return l; p ObX42
} (X3Tav
x"
L20}
} :FTMmW,>'
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改进后的快速排序: AQ[GO6$,%H
C
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package org.rut.util.algorithm.support; ^i}
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import org.rut.util.algorithm.SortUtil; x-?Sn' m
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/** ^kB8F"X
* @author treeroot $H9%J
* @since 2006-2-2 J:zU,IIJ
* @version 1.0 P IwFF}<(
*/ J\M>33zu
public class ImprovedQuickSort implements SortUtil.Sort { A*/HjTX
d!
LE{
private static int MAX_STACK_SIZE=4096; De(Hw&
IV
private static int THRESHOLD=10; ~,B5Hc 2
/* (non-Javadoc) K$E3QVa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nqa&_5"
*/ q;][5
public void sort(int[] data) { :dQ B R
int[] stack=new int[MAX_STACK_SIZE]; 4k@5/5zsM
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int top=-1;
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int pivot; 428>BQA
int pivotIndex,l,r; |='z{WS
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stack[++top]=0; 6U R2IxbE
stack[++top]=data.length-1; [c|]f_ZdK
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while(top>0){ &-B^~M*??
int j=stack[top--]; m4l&
eEp
int i=stack[top--]; WL?\5?G9l
rcC<Zat,|
pivotIndex=(i+j)/2; 2vWx)Drb6
pivot=data[pivotIndex]; .Lsavpo
}%_ b$
SortUtil.swap(data,pivotIndex,j); \}"$ ?d'f
9|gr0~j
file://partition 2h1vVF3
l=i-1; t_$2CRG#
r=j; "C{}Z
do{ .xm.DRk3
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); vRHd&0
SortUtil.swap(data,l,r); iCHOv {p.
} 42(Lb'G
while(l SortUtil.swap(data,l,r); &p4&[H?
SortUtil.swap(data,l,j); 7KAO+\)H^Y
uJC~LC N
if((l-i)>THRESHOLD){
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stack[++top]=i; \Ani}qQ%|
stack[++top]=l-1; |m^k_d!d
}
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if((j-l)>THRESHOLD){ ~5CBEIF(NS
stack[++top]=l+1; uYs5f.! `
stack[++top]=j; 8L:ji,"
} -v]Sr33L
6'!4jh
} ]);%wy{Ho
file://new InsertSort().sort(data); UJCYs`y
insertSort(data); IpcNuZo9&
} lE&&_INHQ
/** AK*LyR?
* @param data t>`asL
*/ R |(q
private void insertSort(int[] data) { ,0~n3G
int temp; Tk:h@F|B.|
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); =,_ +0M9
} LIvFx|
} H1QJk_RL
} iV *q2<>
0 Tx{3#
} CzRc%%BA
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归并排序: 8o'_`{ba
:+z4~%
jA
package org.rut.util.algorithm.support; "AnC?c9?-^
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import org.rut.util.algorithm.SortUtil; JNt^ (z
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/** SEGri#s
* @author treeroot @,cowar*
* @since 2006-2-2 ,D]QxbwZ
* @version 1.0 pgE}NlW
*/ v*SEb~[
public class MergeSort implements SortUtil.Sort{ LSGBq
B&[M7i
/* (non-Javadoc) W;'!gpa
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VcSVu
*/ \KQ71yqY
public void sort(int[] data) { +zaA,e?\
int[] temp=new int[data.length]; 5qZ1FE
mergeSort(data,temp,0,data.length-1); b\$}>O
} a1+#3X.
X[PZg{
private void mergeSort(int[] data,int[] temp,int l,int r){ 2[RoxKm
int mid=(l+r)/2; d4>Z8FF|1B
if(l==r) return ; ]|zp0d=&o
mergeSort(data,temp,l,mid); QxVq^H
mergeSort(data,temp,mid+1,r); G
MX?
for(int i=l;i<=r;i++){ $c:ynjL|P-
temp=data; Vzdh8)Mu\
} #Ssx!+q?
int i1=l; mpuq 9)6
int i2=mid+1; YaKeq5%y
for(int cur=l;cur<=r;cur++){ Tgm nG/Z
if(i1==mid+1) ;CmS ~K:
data[cur]=temp[i2++]; QS` PpyBkd
else if(i2>r) G~2jUyv
data[cur]=temp[i1++]; zr+zhpp
else if(temp[i1] data[cur]=temp[i1++]; njScz"L~
else Q<^Tl(`/N?
data[cur]=temp[i2++]; nrxo&9[@n
} `\gnl'
} E*V`":efS
s.N7qO^:E
} K1r#8Q!t
8S mCpg
改进后的归并排序: H:t$'kb`
E9Np 0M<
package org.rut.util.algorithm.support; zR1^I~
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import org.rut.util.algorithm.SortUtil; 544X1Ww2
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/** XC0bI,Fu,
* @author treeroot 'IZI:V"
* @since 2006-2-2 B$ajK`x&I
* @version 1.0 .aAL]-Rj
*/ u frW\X
public class ImprovedMergeSort implements SortUtil.Sort { i'H/ZwU
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private static final int THRESHOLD = 10; )uj Ex7&c
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/* \r /ya<5
* (non-Javadoc) b J=Jg~&
* TUV&vz{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,SynnE68
*/ iYORu3
public void sort(int[] data) { Tl$[4heE
int[] temp=new int[data.length]; ej4W{IN~:
mergeSort(data,temp,0,data.length-1); kzn5M&f>
} Vr6@>@SC
hAYTj0GZ
private void mergeSort(int[] data, int[] temp, int l, int r) { x }\64
int i, j, k; k7?N ?7w
int mid = (l + r) / 2; }.3nthgz
if (l == r) 1|kvPo#
return; ;1`fC@rI
if ((mid - l) >= THRESHOLD) sYe?M,
mergeSort(data, temp, l, mid); R< ,`[* Z
else -8eoNzut
insertSort(data, l, mid - l + 1); _/uFsYC
if ((r - mid) > THRESHOLD) Mr;E<Lj ^K
mergeSort(data, temp, mid + 1, r); VL%UR{
else uw[<5
insertSort(data, mid + 1, r - mid); *5vV6][
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for (i = l; i <= mid; i++) { M9V
q
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temp = data; rR9|6l
3
} mef<=5t
for (j = 1; j <= r - mid; j++) { [5zx17'
temp[r - j + 1] = data[j + mid]; ]ndvt[4L
} 9xO#tu]
int a = temp[l]; $ACvV"b
int b = temp[r]; iYDEI e
for (i = l, j = r, k = l; k <= r; k++) { [`{Z}q&
if (a < b) { ,TXTS*V?
data[k] = temp[i++]; W3IpHV
a = temp; C ~<'rO}|
} else { o7J
data[k] = temp[j--]; PZE0}>z
b = temp[j]; 0Fk5kGD,&K
} *AoR==:ya
} O4r0R1VQM
} zm]aU`j
/tP|b_7O
/** :rHJ4Tl
* @param data :"=ez<t
* @param l wF <n=
* @param i XWA:J^
*/ D2](da:]8)
private void insertSort(int[] data, int start, int len) { N}pw74=1
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [q/Abz'i
} H<v'^*(
} ln?v
j)j
} ;'5>q&[qbP
} (d(hR0HKE
AvdXEY(-
堆排序: 7![,Q~Fy
: YXX8|>
package org.rut.util.algorithm.support; n#q<`}u,
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import org.rut.util.algorithm.SortUtil; BybW)+~
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/** D}dn.$
* @author treeroot iVB86XZ`
* @since 2006-2-2 bn^{c
* @version 1.0 PV9pa/`@
*/ `S6x<J&T\/
public class HeapSort implements SortUtil.Sort{ Sx?ua<`:d
uT}' Y)m
/* (non-Javadoc) 5]n[]FW
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V}dJ.I /#
*/ FrTi+& <
public void sort(int[] data) { AWP"b?^G|
MaxHeap h=new MaxHeap(); ]|MEx{BG-
h.init(data); A D1=[I3
for(int i=0;i h.remove(); 9[G[$c
System.arraycopy(h.queue,1,data,0,data.length); [x9KVd ^d
} 1+9W+$=h2
POvP]G9'"
private static class MaxHeap{ Z8rvWH9
clNkph
void init(int[] data){ R{ a"Y$
this.queue=new int[data.length+1]; Q^
pmQ
for(int i=0;i queue[++size]=data; B[V+ND'(
fixUp(size); U<CTubF
} rW+ =,L
} H-~6Z",1
QA<Jr5Ys
private int size=0; XmEq2v
kuol rfGB
private int[] queue; ;?8_G%va
tS|(K=$
public int get() { fjU8gV
return queue[1]; $lLz3YS
} 'R
c,Mq'
lEhk'/~
public void remove() { R $&o*K`?
SortUtil.swap(queue,1,size--); *Eo?k<:zPm
fixDown(1); Pb?$t
} oJ4AIQjB
file://fixdown %KmiH
;U
private void fixDown(int k) { u/M+u;
int j; w,h`s.AN
while ((j = k << 1) <= size) { JKGc3j,+#
if (j < size %26amp;%26amp; queue[j] j++; Vm3v-=6
if (queue[k]>queue[j]) file://不用交换 rd9e \%A
break; =K6($|'=
SortUtil.swap(queue,j,k); XzIl`eH
k = j; j#+!\ft5
} S,Xnzrz
} ?)u@Rf9>
private void fixUp(int k) { CaL\fZ
while (k > 1) { G5CI<KRK#
int j = k >> 1; 1XD,uoxB
if (queue[j]>queue[k]) a{R%#e\n
break; P%#<I}0C
SortUtil.swap(queue,j,k); Z@3i$8
k = j; ynE)Xdh
} kP-3"ACG
} 7PtN?;rP
^R# E:3e
} I~ok4L?VB
3+ @<lVew6
} E;+O($bA
LN@F+CyDc
SortUtil: bI:zp!-.
xO&eRy?%
package org.rut.util.algorithm; 8$0rR55
\3pc"^W
import org.rut.util.algorithm.support.BubbleSort; /7}It$|nhy
import org.rut.util.algorithm.support.HeapSort; [[;e)SoA
import org.rut.util.algorithm.support.ImprovedMergeSort; 6f\Lf?vF
import org.rut.util.algorithm.support.ImprovedQuickSort; P@9t;dZN
import org.rut.util.algorithm.support.InsertSort; RLLTw ?]$
import org.rut.util.algorithm.support.MergeSort; cNM3I,o7
import org.rut.util.algorithm.support.QuickSort; l]8D7(g
import org.rut.util.algorithm.support.SelectionSort; Of4^?`
^
import org.rut.util.algorithm.support.ShellSort; "x 3lQ
)XYv}U
/** hM{{\yZS
* @author treeroot Uc@Ao:
* @since 2006-2-2 4`!Z$kt
* @version 1.0 Jo@|"cE=
*/ no<
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public class SortUtil { @>W(1mRi
public final static int INSERT = 1; |Z=^`J
public final static int BUBBLE = 2; qI~xlW
public final static int SELECTION = 3; Tl2C^j
public final static int SHELL = 4; @wE5S6! B\
public final static int QUICK = 5; (X?%^^e!
public final static int IMPROVED_QUICK = 6; 4}4Pyjh
public final static int MERGE = 7; A29gz:F(
public final static int IMPROVED_MERGE = 8; L#+q]j+
public final static int HEAP = 9;
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my4giC2a
public static void sort(int[] data) { _OuWB"
sort(data, IMPROVED_QUICK); _nbBIaHN{
} `C$:Yf]%nG
private static String[] name={ bO'Sgc[]
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" p2DrEId
}; .ys6"V|31
~TSy<t~%-
private static Sort[] impl=new Sort[]{ gx\&_)w N
new InsertSort(), Il=
W,/y
new BubbleSort(), vK_?<>
new SelectionSort(), a hR ^
new ShellSort(), A-T]9f9
new QuickSort(), 2JJ"O|Ibz
new ImprovedQuickSort(), Z|5?7v;h5
new MergeSort(), }M3fmAP}
new ImprovedMergeSort(), Z;:u'=
new HeapSort() }^/9G17
}; c@/(B:@
ni<A3OB
public static String toString(int algorithm){ E}40oID
return name[algorithm-1]; /4`
0?/V
} &!/}Qp
^(|vsFzn
public static void sort(int[] data, int algorithm) { `"&da#N]
impl[algorithm-1].sort(data); L:1^Kxg
} MD|5 ol9
b0Kc^uj5
public static interface Sort { m6',SY9T
public void sort(int[] data); ^!9~Nwn
} Cb9;QzBVA#
p' +
public static void swap(int[] data, int i, int j) { ds?v'|
int temp = data; ,]+z)
data = data[j]; \hM|(*DL
data[j] = temp; Bc6|n :;u
} }RwSp!}C
} S%yd5<%_