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。 r?2EJE2{V
插入排序: ;1AXu/
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package org.rut.util.algorithm.support; $H8B%rT]
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import org.rut.util.algorithm.SortUtil; OaeX:r+&Q
/** AEd]nVV Q
* @author treeroot ?RQ_LA;
* @since 2006-2-2 |5TzRz
* @version 1.0 NpLZ
,|H
*/ G nPrwDB
public class InsertSort implements SortUtil.Sort{ "K c/Cs2[
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/* (non-Javadoc) s
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yQ!I`T>a
*/ <q.Q,_cW
public void sort(int[] data) { ?>/9ae^Bw
int temp; 7SJR_G6,{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Z_;!f}X
} 8}K^o>J&K
} )lZoXt_3
} Rn$[P.||
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} l=PZlH
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冒泡排序: _)kTlX:,
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package org.rut.util.algorithm.support; 363KU@`
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import org.rut.util.algorithm.SortUtil; B",;z)(%
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/** .+(R,SvN%<
* @author treeroot %k'>bmJ
* @since 2006-2-2 <&RpGAk%I
* @version 1.0 \2))c@@%
*/ $a'}7Q_
public class BubbleSort implements SortUtil.Sort{ RJ1@a
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/* (non-Javadoc) ]?%S0DO*
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g{^~g
*/ +Ly@5y"
public void sort(int[] data) { 19b@QgfWpb
int temp; es^@C9qt
for(int i=0;i for(int j=data.length-1;j>i;j--){ 74r$)\q
if(data[j] SortUtil.swap(data,j,j-1); jS ?#c+9
} ShesJj
} 4<V}Aj8l
} |*$0~mA
} oy-y QYX
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} > JC"YB
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选择排序: C#LTF-$])
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package org.rut.util.algorithm.support; `a `>Mtl
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import org.rut.util.algorithm.SortUtil; ;,/4Ry22j-
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/** Lpohc4d[V
* @author treeroot *,|x
p
* @since 2006-2-2 %xrldn%
* @version 1.0 3i1TBhs6
*/ Ae\:{[c_D
public class SelectionSort implements SortUtil.Sort { 6WX?Xc]$3
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/* :nOI|\rC
* (non-Javadoc) "5204I
* -tIye{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iPdS>ee
*/ lAR1gHhJ
public void sort(int[] data) { Kr?<7vMT5
int temp; ~BiLzT1,
for (int i = 0; i < data.length; i++) { I?
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int lowIndex = i; iG#92e4
for (int j = data.length - 1; j > i; j--) { ,FwpHs $A
if (data[j] < data[lowIndex]) { fV2w &:^3
lowIndex = j; Eh^gR`I
} Rl&nR$#
} tOX-vQ
SortUtil.swap(data,i,lowIndex); ,xg-H6Xfa{
} T|,/C|L
} %l?*w~x
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} &NOCRabc
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Shell排序: W_6gV
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package org.rut.util.algorithm.support; Q zg?#|
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import org.rut.util.algorithm.SortUtil; 6L rI,d
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/** W[R`],x`
* @author treeroot |8tKN"QG
* @since 2006-2-2 =YIosmr
* @version 1.0 YYL3a=;`a
*/ #&ei
public class ShellSort implements SortUtil.Sort{ +IMt$}7[
,`PYU[
/* (non-Javadoc) $4*gi&
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P_5 G'[
*/ @Ko#nDEq
public void sort(int[] data) { -/
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for(int i=data.length/2;i>2;i/=2){
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for(int j=0;j insertSort(data,j,i); hXvC>ie(i
} ;66{S'*[
} m#ig.z|A
insertSort(data,0,1); Vju/+
} e,Z[Nox
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/** <,Pl31g^
* @param data l[i1,4
* @param j [+8*}03
* @param i }t:*w
*/ cY Qm8TR<
private void insertSort(int[] data, int start, int inc) { /E3~z0
int temp; 'y5H%I!
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); -?l`LbD
} @-Y,9mM
} M2;6Cz>,P
} ]"^p}:
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} R#i`H(N
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快速排序: W7;RQ
Al]*iw{
package org.rut.util.algorithm.support; O \gVB!x
&-w. rF@
import org.rut.util.algorithm.SortUtil; jcjl q-x
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/** OO'zIC<z
* @author treeroot @iMF&\KC
* @since 2006-2-2 #
2FrP5rC
* @version 1.0 0fLd7*1>
*/ -knP5"TB
public class QuickSort implements SortUtil.Sort{ =Ot_P7'5gv
Gx4{ 9
/* (non-Javadoc) )TyP{X>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;U$Rd,T4S
*/ p>f?Rw_
public void sort(int[] data) { z_=V6MDM
quickSort(data,0,data.length-1); )||CU]"b?
} H:
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private void quickSort(int[] data,int i,int j){ $Yp.BE<}
int pivotIndex=(i+j)/2; U(Bmffn4Z
file://swap 2Q7X"ek~[
SortUtil.swap(data,pivotIndex,j); a]Y9;(
2 <@g *
int k=partition(data,i-1,j,data[j]); -PU.Uw]
SortUtil.swap(data,k,j); gyPwNE
if((k-i)>1) quickSort(data,i,k-1); fW[RCd
if((j-k)>1) quickSort(data,k+1,j); rVRv*W
DF=Rd#
} gX$gUB) x
/** xJnN95`R@
* @param data ;.rY`<|
* @param i JStEOQF4
* @param j ^.
* @return CJDNS21m
*/ HIt9W]koO
private int partition(int[] data, int l, int r,int pivot) { o9yUJ@
:i
do{ OEX\]!3_Fm
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); LPZ\T}<l
SortUtil.swap(data,l,r); gIIF17|Z
} 6__HqBQ
while(l SortUtil.swap(data,l,r); ^t *Ba>A
return l; 1*'gaa&y
} 9g'6zB
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} 9Zmq7a
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改进后的快速排序: [@B!N+P5;
cct/mX2&~
package org.rut.util.algorithm.support; kY6_n4
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import org.rut.util.algorithm.SortUtil; ;j[:tt\k
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/** +EqL|
* @author treeroot gjFQDrz(
* @since 2006-2-2 #/8
Nav
* @version 1.0 `B:hXeI
*/ rhX?\_7o
public class ImprovedQuickSort implements SortUtil.Sort { CJwzjH
o*"Q{Xh#Qd
private static int MAX_STACK_SIZE=4096; \m1^sFMZ
private static int THRESHOLD=10; d2)]6)z6
/* (non-Javadoc) U[OUIXUi
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q}0I`$MU
*/ B-"F67 :
public void sort(int[] data) { +(z[8BJl
int[] stack=new int[MAX_STACK_SIZE]; YfMs~}h,
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int top=-1; #?eMEws
int pivot; dWe%6s;
int pivotIndex,l,r; g!r)yzK
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stack[++top]=0; <OJqeUo+*\
stack[++top]=data.length-1; $!_} d
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while(top>0){ <^'IC9D]
int j=stack[top--]; }_mMQg2>=
int i=stack[top--]; o>T+fBHE
y\[* mgl:
pivotIndex=(i+j)/2; ,2i1 4H
pivot=data[pivotIndex]; Tj\hAcD
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SortUtil.swap(data,pivotIndex,j); ]scr@e
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file://partition +
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l=i-1; J4z&J SY
r=j; Dkh=(+> <
do{ x9 n(3Oa
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); - DYH>!
SortUtil.swap(data,l,r); vQy<%[QO
} }w2Et
while(l SortUtil.swap(data,l,r); D0MW~Y6{
SortUtil.swap(data,l,j); 3H4T*&9;n
>IA1 \?(
if((l-i)>THRESHOLD){ @+)T"5_Y[
stack[++top]=i; ]1|7V|N6
stack[++top]=l-1; \q24E3zS&
} tK'9%yA\
if((j-l)>THRESHOLD){ qSD3]Dv"
stack[++top]=l+1; B<$6Dj%L
stack[++top]=j; -%K}~4J
} &%k_BdlkQ
St>
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} Goy[P2m
file://new InsertSort().sort(data); +^J;ic
insertSort(data); '"ze Im~
} #J8(*!I
/** N=~DSsw
* @param data P3Ah1X7W"C
*/ v |pHbX
private void insertSort(int[] data) { aSJD'u4w.a
int temp; * kUb[
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); a5d_= :S;
} TV0Y{x*~iH
} PGVp1TQ
} oR7f3';?6
Bs>S2]
} PlgpH'z4$
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归并排序: lL5* l,)To
5$X 8|Ve
package org.rut.util.algorithm.support; q./jYe
*A")A.R
import org.rut.util.algorithm.SortUtil; 9;`hJ!r
XaoVv2=G~
/** 8,VEuBZ
* @author treeroot =)N6R
* @since 2006-2-2 m6 Y0,9
* @version 1.0 A 2\3.3
*/ /'_Yct=
public class MergeSort implements SortUtil.Sort{ hw)z]
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/* (non-Javadoc) +bb-uoZf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wqap~X
*/ S@~ReRew2
public void sort(int[] data) { f}ch1u>
int[] temp=new int[data.length]; Nd@/U
c
mergeSort(data,temp,0,data.length-1); 02(Ob
} c|(Q[=
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private void mergeSort(int[] data,int[] temp,int l,int r){ wsc=6/#u
int mid=(l+r)/2; AUfcf*
if(l==r) return ; [;'$y:L=g
mergeSort(data,temp,l,mid); !ZCxi
mergeSort(data,temp,mid+1,r); RQ#9[6w!v
for(int i=l;i<=r;i++){ 300[2}Y]
temp=data; 9+.3GRt7
} /c4$m3?]
int i1=l; p!<PRms@
int i2=mid+1; )oM%
N
for(int cur=l;cur<=r;cur++){ uaCI2I
if(i1==mid+1) c]qh)F$s8
data[cur]=temp[i2++]; :3J`+V}9;
else if(i2>r) r/0AM}[!*j
data[cur]=temp[i1++]; qNMYZ0,
else if(temp[i1] data[cur]=temp[i1++]; $?LegX
else oJ#;X R
data[cur]=temp[i2++]; y`/:E<fVk
} :x^e T
} d?cCSf
ST4[d'|j
} t~qAA\p}o
IEI&PRD
改进后的归并排序: C*t0`3g
d
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package org.rut.util.algorithm.support; <Skf
n`).
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import org.rut.util.algorithm.SortUtil; -KG1"g,2
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/** ofgNL .u
* @author treeroot bhfKhXh8
* @since 2006-2-2 \`-xxhb?e
* @version 1.0 ;rnhv:Iw
*/ YhN:t?
public class ImprovedMergeSort implements SortUtil.Sort { a'*~E?b
whGtVx|zR
private static final int THRESHOLD = 10; SK*<H~2
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/* ldRq:M5z
* (non-Javadoc) 9c5DEq
* Fa{[kJ8z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "1p,
r&}
*/ KmWd$Qy,
public void sort(int[] data) { KR%NgV+}!0
int[] temp=new int[data.length]; 'mF&`BN}b
mergeSort(data,temp,0,data.length-1); *w6F0>u
} o+- 0`!yj
SWT)M1O2
private void mergeSort(int[] data, int[] temp, int l, int r) { b/E3Kse?
int i, j, k; *hpS/g/3\
int mid = (l + r) / 2; R(f%*S4
if (l == r) ndk~(ex|j
return; wawJZ+V
if ((mid - l) >= THRESHOLD) lt\Bm<"z!1
mergeSort(data, temp, l, mid); &F'n
>QT9q
else M`)3(|4
insertSort(data, l, mid - l + 1); EQ"+G[j~x
if ((r - mid) > THRESHOLD) f/m0,EERk
mergeSort(data, temp, mid + 1, r); uw@-.N^
else fEGnI\
insertSort(data, mid + 1, r - mid); Tv|iCYB?
vJX0c\e
for (i = l; i <= mid; i++) { e YiqT Wn:
temp = data; Ypinbej
} { /
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for (j = 1; j <= r - mid; j++) { oTTE<Ct[
temp[r - j + 1] = data[j + mid]; ]L3MIaO2T
} {Z>Mnw"R
int a = temp[l]; \#C]|\
int b = temp[r]; i7&ay\+@
for (i = l, j = r, k = l; k <= r; k++) { DJ1!Xuu
if (a < b) { ^5k~7F.
data[k] = temp[i++]; z.tN<P 7
a = temp; ke2M&TV
} else { UunZ/A$]m
data[k] = temp[j--]; w,0OO
f
b = temp[j]; 3 k/X;:,.
} hdH3Jb_hl(
} FgR9$ is+
} FB3}M)G>M
bH%d*
/** {.Brh"yC
* @param data I:;umyRH
* @param l ?0:=+%.
* @param i L3s"L.G
*/ d9 l2mJzW
private void insertSort(int[] data, int start, int len) { bu=RU
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); D&DbxTi
} Sj viH
} e`K{
} +{%)}?F
} R ^INl@(O
#K/95!)
堆排序: ROO@EQ#`Z
N7^sn!JB
package org.rut.util.algorithm.support; '{)Jhl47
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import org.rut.util.algorithm.SortUtil; cXb&Rm'L
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?`e
/** yIWgC[
* @author treeroot w/9%C(w6
* @since 2006-2-2 K.b:ae^k
* @version 1.0 j?\z5i""f
*/ hzA+,
public class HeapSort implements SortUtil.Sort{ C>QWV[F
'k[vcnSz\/
/* (non-Javadoc) ,G[Y< ~Hy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a&7uRR26
*/ VDiW9]
public void sort(int[] data) { p@oz[017/J
MaxHeap h=new MaxHeap(); Ue!yK
h.init(data); k[y^7,r
for(int i=0;i h.remove(); !&5*H06
System.arraycopy(h.queue,1,data,0,data.length); |3`8$-
} T`GiM%R;g
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private static class MaxHeap{ hUEA)c
g|tclBx
void init(int[] data){ *n6L3"cO
this.queue=new int[data.length+1]; ~_wSB[z
for(int i=0;i queue[++size]=data; B#3Q4c$
fixUp(size); HumL(S'm
} LG??Q+`l
} 1jpft3*x
RNt9Qdr4y
private int size=0; '($$-P\/
*JZlG%z
private int[] queue; vx}BTH
>Sb3]$$
public int get() { s@6Jz\<E
return queue[1]; "/%o'Fq
} 2WE01D9O
1*.*\4xo
public void remove() { o/&
IT(v
SortUtil.swap(queue,1,size--); Lb{.}
fixDown(1); *&hbfsP:
} w:mm@8N
file://fixdown ZKM@U?PK
private void fixDown(int k) { #$}A$ sm
int j; 5=8t<v1Bn
while ((j = k << 1) <= size) { !lBK!'0
if (j < size %26amp;%26amp; queue[j] j++; 7}`FXB
if (queue[k]>queue[j]) file://不用交换 5qFHy[IA
break; ZH~Wn#Wp
SortUtil.swap(queue,j,k); DcE4r>8B
k = j; |7${E^u
} #aiI]'
} X8wtdd]64
private void fixUp(int k) { ?-tNRIPW@p
while (k > 1) { D
,[yx='
int j = k >> 1; /QQjb4S}
if (queue[j]>queue[k]) RiFUa
$
break; s'bTP(wl9
SortUtil.swap(queue,j,k); ,5AEtoF
k = j; -aV(6i*n
} Q 9E.AN
} &y7xL-xP
+k[w)7Q
} ls~9qkAyLx
#)3 B
} "2p\/VfA
~YByyJG
SortUtil: dnh~An 9
Wfy+9"-;s
package org.rut.util.algorithm; ^x_$%8
E'NS$,h
import org.rut.util.algorithm.support.BubbleSort; 2jxIr-a1G
import org.rut.util.algorithm.support.HeapSort; }(,{^".[}
import org.rut.util.algorithm.support.ImprovedMergeSort; h\Q@zR*0a
import org.rut.util.algorithm.support.ImprovedQuickSort; e3?z^AUXm
import org.rut.util.algorithm.support.InsertSort; wuM'M<J@
import org.rut.util.algorithm.support.MergeSort; mu5r4W47
import org.rut.util.algorithm.support.QuickSort; HJP~
lg
import org.rut.util.algorithm.support.SelectionSort; |dDKO
import org.rut.util.algorithm.support.ShellSort; ZT8LMPC
T|0d2aa
/** f>|<5zm#<
* @author treeroot t0Jqr)9}6
* @since 2006-2-2 ?Iq{6O>D.
* @version 1.0 6YV"H
*/ N(2M
w:}
public class SortUtil { ]&dPY[~,/i
public final static int INSERT = 1; ;>S|?M4GZ
public final static int BUBBLE = 2; >(.Y%$9"E
public final static int SELECTION = 3; ^AiQNL}
public final static int SHELL = 4; 6ud<U#\b&
public final static int QUICK = 5; >0uj\5h)I]
public final static int IMPROVED_QUICK = 6; `6;$Z)=.
public final static int MERGE = 7; ]2
$T 6
public final static int IMPROVED_MERGE = 8; X4Pm&ol
public final static int HEAP = 9; i%,
't
xLfv:Rp
public static void sort(int[] data) { K\59vtga
sort(data, IMPROVED_QUICK); R1eWPtWs
} z^s\&gix
private static String[] name={ USS%T<Vk
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" X*:,|
}; :8HVq*itS
{m@tt{%
private static Sort[] impl=new Sort[]{ o8v,178
new InsertSort(), |~PaCw8-ge
new BubbleSort(), nF<xJs
new SelectionSort(), \Hf/8!q
new ShellSort(), gXM+N(M-
new QuickSort(), xA`j:zn'j
new ImprovedQuickSort(), OiS\tK?|GV
new MergeSort(), Rjv;[
new ImprovedMergeSort(), 4O/IT1+A
new HeapSort() oZ ^,*
}; ect$g#
`S.I,<&
public static String toString(int algorithm){ B2a#:E,6
return name[algorithm-1]; /Ov1eQBNG
} !l Egta[Ql
sFnR;
public static void sort(int[] data, int algorithm) { g"(@+\XZH"
impl[algorithm-1].sort(data); u[oV
Jvc
} T7Y}v,+-
]>Gi_20*.
public static interface Sort {
;NrPMz
public void sort(int[] data); &fl RrJ
} es~1@Jb
3^xq+{\)
public static void swap(int[] data, int i, int j) { +l.LwA
int temp = data; cc:$$_'L
data = data[j]; <(B|g&A
data[j] = temp; #Sx
} ^!0z+M:>^
} m l@%H