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。 *%{gYpn
插入排序: ]gYz
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package org.rut.util.algorithm.support; S S2FTb-m
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import org.rut.util.algorithm.SortUtil; bFe+m1Q_
/** H,Z;=N_
* @author treeroot r E}%KsZ
* @since 2006-2-2 Jn{OWw2
* @version 1.0 .C 8PitS
*/ sCR67/
public class InsertSort implements SortUtil.Sort{ *h}XWB C1q
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/* (non-Javadoc) {r@Ty*W}
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C(00<~JC
*/ S30?VG9U0f
public void sort(int[] data) { Z.92y
int temp; $2W%2rZ
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >-H{Z{VDd
} :xtXQza"-
} ?VP8ycm
} "jG}B.l=,
/YZr~|65
} E\Rhz]G(
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冒泡排序: b )B?
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package org.rut.util.algorithm.support; 0g+'/+Ho 4
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import org.rut.util.algorithm.SortUtil; O8h%3&
ILGMMA_2
/** |Y?HA&
* @author treeroot "wNJ
* @since 2006-2-2 7Zlw^'q$:L
* @version 1.0 etTn_v
*/ ,yiX# ;j
public class BubbleSort implements SortUtil.Sort{ DGS $Ukz&T
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/* (non-Javadoc) o,_?^'@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R%?9z 8-
*/ hDF@'G8F
public void sort(int[] data) { #qK:J;Sn3
int temp; jPUwSIP
for(int i=0;i for(int j=data.length-1;j>i;j--){ }H^+A77v
if(data[j] SortUtil.swap(data,j,j-1); E=nIRG|g
} bbE!qk;hEP
} ?l9XAWt\
} D]zwl@sRX:
} PGqQ@6B
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} 5>[u `
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选择排序: ~"nxE
.+$Q<L
package org.rut.util.algorithm.support; 'Gj3:-xqL
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import org.rut.util.algorithm.SortUtil; ,Q
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/** t'n pG}`tE
* @author treeroot -XB/lnG
* @since 2006-2-2 )Y"+,$$>Y`
* @version 1.0 EV]1ml k$
*/ hgPa6Kd
public class SelectionSort implements SortUtil.Sort { fD[*_^;h)
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/* F1*>y
* (non-Javadoc) ItNz}4o|d
* d3\qKL!~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y
[}.yyye
*/ Mk"^?%PxT
public void sort(int[] data) { os=e|vkB*
int temp; u_oaebOrpP
for (int i = 0; i < data.length; i++) { k\5c|Wq|g
int lowIndex = i; ~%<X0s|
for (int j = data.length - 1; j > i; j--) { Hj^1or3R]
if (data[j] < data[lowIndex]) { ]Sf]J4eQ
lowIndex = j; -t!~%_WCv
} 'jWr<]3
} rNXQf'*I
SortUtil.swap(data,i,lowIndex); d;boIP`M;
} ~vm%6CABM
} Z^3rLCa
j eoz*Dz
} =$'6(aDH
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Shell排序: I|qo+u)
h4fJvOk|!
package org.rut.util.algorithm.support; p`olCp'
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import org.rut.util.algorithm.SortUtil; c"f-3kFv
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/** oH97=>
* @author treeroot ,wQ5.U,
* @since 2006-2-2 DhKS
pA
* @version 1.0 ;`0%t$@-
*/ C0T;![/4A
public class ShellSort implements SortUtil.Sort{ (KjoSN(
K
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/* (non-Javadoc) 9+Np4i@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cio
1E-4
*/ R@1 xt@?
public void sort(int[] data) { -*1d!
for(int i=data.length/2;i>2;i/=2){ f,U.7E
for(int j=0;j insertSort(data,j,i); UXJeAE-
} _>&X\`D
} Yl
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insertSort(data,0,1); ` Fa~
} f\|w'
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/** i1 }:8Unxf
* @param data G|bT9f$
* @param j f z'@_4hg
* @param i LBw1g<&
*/ W=~~5jFX
private void insertSort(int[] data, int start, int inc) { l!D}3jD
int temp; ~[t[y~Hup
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); zfJT,h-{
} b6,iZ+]
} qU \w=
} Q*D;U[
qqjwJ!@P
} lU8l}Ndz"
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快速排序: =x/X:;)>
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package org.rut.util.algorithm.support; Xr,1&"B&t
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import org.rut.util.algorithm.SortUtil; s:n6rG
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/** aC]$k'71
* @author treeroot /2&c$9=1
* @since 2006-2-2 LQ@"Xe]5
* @version 1.0 ;YaQB#GK%
*/ 6fkRrD
public class QuickSort implements SortUtil.Sort{ \[;0KV_
5?f ^Rz
/* (non-Javadoc) Akq2 d;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fBU`k_
*/ 6_(&6]}66
public void sort(int[] data) { d-oMQGOklb
quickSort(data,0,data.length-1); !Jo_"#5
} ]vAz
private void quickSort(int[] data,int i,int j){ z<MsKD0Q
int pivotIndex=(i+j)/2; tR#OjkvX
file://swap '+@=ILj>
SortUtil.swap(data,pivotIndex,j); = }~hWL
+Q/R{#O
int k=partition(data,i-1,j,data[j]); =O~_Q-
SortUtil.swap(data,k,j); 4S7v:1~xe
if((k-i)>1) quickSort(data,i,k-1); " s,1%Ltt
if((j-k)>1) quickSort(data,k+1,j); GV1pn) 4
esJ~;~[@(r
} v&6-a* <Z
/** 8'[~2/
* @param data CT&|QH{
* @param i b!+hH Hv:
* @param j ` ./$&'
* @return =7?4eYHC
*/ l5~os>
private int partition(int[] data, int l, int r,int pivot) { d9k0F
OR1
do{ N:^n('U&j
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); jVEGj5F;N
SortUtil.swap(data,l,r); T~-ycVc
} ,<.V7(|t)
while(l SortUtil.swap(data,l,r); _5w]a 2
return l; D ;RiGW4
} |44Ploz2b
|NlO7aQ>2H
} R7%#U`Q^A
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改进后的快速排序: \UA[
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package org.rut.util.algorithm.support; C2!|OQ9A2
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import org.rut.util.algorithm.SortUtil; aHD]k8m z
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/** <]ox;-56
* @author treeroot !M(xG%M-V
* @since 2006-2-2 [DuttFX^x
* @version 1.0 %O;:af"Ja8
*/ W" scV@HKu
public class ImprovedQuickSort implements SortUtil.Sort { EAUEQk?9
YqscZ(L:y
private static int MAX_STACK_SIZE=4096; h0EEpL|\
private static int THRESHOLD=10; j/DzCc p7
/* (non-Javadoc) )+#` CIv
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]U+LJOb
*/ p:&8sO!m
public void sort(int[] data) { "MeVE#O
int[] stack=new int[MAX_STACK_SIZE]; -abt:or
*tA1az-jO
int top=-1; KR}?H#%
int pivot; 9+|$$)
int pivotIndex,l,r; KM,\
poE0{HOU
stack[++top]=0; hW<%R]^|
stack[++top]=data.length-1; 10Q ]67
!aUs>1i
while(top>0){ i$Ul(?
int j=stack[top--]; @FAA2d
int i=stack[top--]; N%@Qf~
-OV&Md:~
pivotIndex=(i+j)/2; gb1V~
pivot=data[pivotIndex]; ijv(9mR
xo^b&ktQd
SortUtil.swap(data,pivotIndex,j); 2DA]i5
3Tcms/n
file://partition v&\Q8!r_
l=i-1; w7L{_aom
r=j; b!t0w{^w
do{ kdiM5l70
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Z-%\
<zT
SortUtil.swap(data,l,r); ic:zsuEm
} G[ PtkPSJ
while(l SortUtil.swap(data,l,r); lf|FWqqV
SortUtil.swap(data,l,j); s S+MqBh&I
'ms-*c&
if((l-i)>THRESHOLD){ }rUN_.n4z
stack[++top]=i; q1x`Bj
stack[++top]=l-1; `7E;VL^Y1
} T=DbBy0-
if((j-l)>THRESHOLD){ ^dWa;m]l
stack[++top]=l+1; h,:m~0gmj
stack[++top]=j; ]h`&&B qt
} .vf'YNQ%
mY|)KJ
} [>I<#_^~
file://new InsertSort().sort(data); l:~/<`o
insertSort(data); J3V=
46Yc
} uh0VFL*@
/** ;?Tbnn Wn
* @param data LVM%"sd?
*/ 6_o*y8s.
private void insertSort(int[] data) { 5vQHhwO50k
int temp; s[>,X#7 y
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); XT%nbh&y
} C^Yb\N}S
} -m zIT4
} u{cW:
K!%+0)A
} ^oz3F]4,g
Wtd/=gmiI
归并排序: Evq IcZ
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package org.rut.util.algorithm.support; 1s&zMWC
n+9=1Oo"
import org.rut.util.algorithm.SortUtil; g}oi!f$|
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/** /U*C\ xMm
* @author treeroot J1U/.`Oy
* @since 2006-2-2 q[_VuA]&
* @version 1.0 e)k9dOR
*/ _yx>TE2e
public class MergeSort implements SortUtil.Sort{ *KF#'wi
\.{$11P#
/* (non-Javadoc) _Ay9p[l
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R%WCH?B<}
*/ r|8d
4
public void sort(int[] data) { cl3K<'D
int[] temp=new int[data.length]; B"w?;EeV.
mergeSort(data,temp,0,data.length-1); a5^]20Fa
} sE<V5`Z=
79j+vH!zh
private void mergeSort(int[] data,int[] temp,int l,int r){ $rBq"u=,0+
int mid=(l+r)/2; u~:y\/Y6
if(l==r) return ; 05#1w#i
mergeSort(data,temp,l,mid); Mj3A5;#
mergeSort(data,temp,mid+1,r); h2A <" w
for(int i=l;i<=r;i++){ qA7>vi%
temp=data; k"%~"9
} K7B/s9/xs
int i1=l; RLXL&
int i2=mid+1; ,-LwtePJ0
for(int cur=l;cur<=r;cur++){ NA`SyKtg_
if(i1==mid+1) Rok7n1gW
data[cur]=temp[i2++]; UgSB>V<?
else if(i2>r) Xl{P8L
data[cur]=temp[i1++]; HRCT}
else if(temp[i1] data[cur]=temp[i1++]; | j`@eF/"
else 8'[7
)I=
data[cur]=temp[i2++]; -Cpl?Io`r5
} eK=xrk
} re?,Wext\
/Iy]DU8
} SM#]H-3
U$.@]F4&
改进后的归并排序: oulVg];
gCS<iBT(7
package org.rut.util.algorithm.support; DJ k/{Z:
P )"m0Lu<
import org.rut.util.algorithm.SortUtil; 2;`1h[,-^
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/** /9*B)m"
* @author treeroot $9#H04.x
* @since 2006-2-2 n
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* @version 1.0 J1|\Q:-7p
*/ 7kLz[N6Ll
public class ImprovedMergeSort implements SortUtil.Sort { 6vo;!V6
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private static final int THRESHOLD = 10; %nZo4hnr$r
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/* ]@c+]{
* (non-Javadoc) A RuA<vQ
* wk D^r(hiH
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r'r%w#=`t
*/ :{v#'U/^
public void sort(int[] data) { 4jMFr,
int[] temp=new int[data.length]; 6 7.+
.2
mergeSort(data,temp,0,data.length-1); (zYtNLoFx
} `pa!~|p
L.2^`mZs
private void mergeSort(int[] data, int[] temp, int l, int r) { ZohCP
int i, j, k; _ QI\
int mid = (l + r) / 2; z+wA
rPxc
if (l == r) !u[9a;Sa#
return; CS5?Ti6
if ((mid - l) >= THRESHOLD) 'RR~7h
mergeSort(data, temp, l, mid); '~<m~UXvD#
else #aJ(m&
insertSort(data, l, mid - l + 1); 81F/G5
if ((r - mid) > THRESHOLD) . B9iLI
mergeSort(data, temp, mid + 1, r); LVfF[
else DB|Y
insertSort(data, mid + 1, r - mid); U^%Q}'UYym
\;3~a9q%
for (i = l; i <= mid; i++) { jl$ece5v
temp = data; A]0
St@
} K~{$oD7!
for (j = 1; j <= r - mid; j++) { o3^l~iT
temp[r - j + 1] = data[j + mid]; `/XY>T}-
} :yr+vcD?
int a = temp[l]; e0zq1XcZ
int b = temp[r]; wLH>:yKUU
for (i = l, j = r, k = l; k <= r; k++) { bKY7/w<dP
if (a < b) { gIa+5\qYY
data[k] = temp[i++]; )3}9K
^jS
a = temp; ZRB)uA)5=
} else { nI-w}NQ
data[k] = temp[j--]; g"DG]/ev
b = temp[j]; *boR`[Ond
} SiRaFj4s"
} KIf dafRL
} gMmaK0uhS
eS\Vib
/** Y'S%O/$
* @param data -q1??u
* @param l 5h-SCB>P
* @param i Y0@"fU35
*/ GqvpA#
i
private void insertSort(int[] data, int start, int len) { '&tG?gb&
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); zuad~%D<I
} T{.pM4Hd
} XbKYiy
} r&JgLC(
} 4y?n
[/M/
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堆排序: p!7FpxZY
XB^'K2
package org.rut.util.algorithm.support; ,{u
yG:
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import org.rut.util.algorithm.SortUtil; Uw. `7b>B
wPd3F.<$
/** 3vN_p$
* @author treeroot ^R7lom.
* @since 2006-2-2 rdP[<Y9
* @version 1.0 4{U T!WIi
*/ gjwn7_
public class HeapSort implements SortUtil.Sort{ ^e _hLX\SW
x7&B$.>3
/* (non-Javadoc) wr/"yQA]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qZtzO2Mt
*/ FEz-+X<q2
public void sort(int[] data) { 3*"WG O5
MaxHeap h=new MaxHeap(); {0wIR_dGX
h.init(data); F3@phu${
for(int i=0;i h.remove(); %9F([K
System.arraycopy(h.queue,1,data,0,data.length); vjGo;+K
} |O\s|H
iAEbu&XG
private static class MaxHeap{ +US!YU
|&+o^
void init(int[] data){ W.f/pu
this.queue=new int[data.length+1]; x;P_1J%Q
for(int i=0;i queue[++size]=data; .\ULbN3Z
fixUp(size); d9fC<Tp
} XFHYQ2ME2
} yiXSYD
S]e|"n~@
private int size=0; _~l5u8{^ 6
WdH$JTk1
private int[] queue; ;>EM[u
{tuYs:
public int get() { #4Rx]zW^%
return queue[1]; 1QcNp(MO
} NdA[C|_8}f
~F|+o}a`
public void remove() { y1eWpPJa
SortUtil.swap(queue,1,size--); 3</_c1~
fixDown(1); [2!w_Iw'
} )
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file://fixdown *e TqVG.
private void fixDown(int k) { X"|['t
int j; '6iEMg&3
while ((j = k << 1) <= size) { P6'1.R
if (j < size %26amp;%26amp; queue[j] j++; JW83Tp8[8
if (queue[k]>queue[j]) file://不用交换 h,u,^ r
break; PB\(=
SortUtil.swap(queue,j,k); B[Ku\A6&
k = j; gZ3u=uME
} Xv5wJlc!d
} Ct <udO
private void fixUp(int k) { _/s$ZCd
while (k > 1) { ^B.5GK)!
int j = k >> 1; p?%y82E
if (queue[j]>queue[k]) c \J:![x
break; ul6]!Iy
SortUtil.swap(queue,j,k); qdJ=lhHM}
k = j; ?4#Li~q
} F4-$~v@
} K*vt;L
In"ZIKaC
} ok"k*?Ov
KEo,m
} E1aHKjLQ
O_muD\
SortUtil: a8e6H30Sm
oQ/E}Zk@
package org.rut.util.algorithm; ]KKS"0a
c(f
import org.rut.util.algorithm.support.BubbleSort; T?CdZc.
import org.rut.util.algorithm.support.HeapSort; F`9xVnK=
import org.rut.util.algorithm.support.ImprovedMergeSort; lBLARz&c#
import org.rut.util.algorithm.support.ImprovedQuickSort; 'A=^Se`=
import org.rut.util.algorithm.support.InsertSort; t:x\kp
import org.rut.util.algorithm.support.MergeSort; b;B%q$sntC
import org.rut.util.algorithm.support.QuickSort; wtLO!=B
import org.rut.util.algorithm.support.SelectionSort; PFlNo` iO
import org.rut.util.algorithm.support.ShellSort; Gi|w}j_
$t'MSlF
/** y4
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* @author treeroot "rALt~AX
* @since 2006-2-2 })H wh).
* @version 1.0 ^qvZXb
*/ 1APe=tJ
public class SortUtil { aB2FC$z
public final static int INSERT = 1; 8+Lm's=W*
public final static int BUBBLE = 2; ~f&E7su-6+
public final static int SELECTION = 3; +/4A
public final static int SHELL = 4; V# }!-Xj
public final static int QUICK = 5; IYE~t
public final static int IMPROVED_QUICK = 6; ,B*EVN
public final static int MERGE = 7; [:
n'k
public final static int IMPROVED_MERGE = 8; +5g_KS
public final static int HEAP = 9; &T?RZ2
oz\!V*CtK
public static void sort(int[] data) { K-^\"
W8
sort(data, IMPROVED_QUICK); q5J5>
} Gt8M&S-;
private static String[] name={ xjUT{iwS
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |#v7/$!
}; u"r`3P`
3V+] 9;
private static Sort[] impl=new Sort[]{ )` Sr fGp8
new InsertSort(), g>E LGG|Q
new BubbleSort(), :[.vM
new SelectionSort(), [t m_Mg
new ShellSort(), M~Tuj1?
new QuickSort(), y1jCg%'H
new ImprovedQuickSort(), "=HA Y
new MergeSort(), K(e$esLs-
new ImprovedMergeSort(), jKz$@gP
new HeapSort() D%[mWc@1I
}; gs^Xf;gvI
CCs%%U/=
public static String toString(int algorithm){ ozyX$tp
return name[algorithm-1]; (U DnsF
} %?1ew
\i>?q
public static void sort(int[] data, int algorithm) { B-RjMxX4>
impl[algorithm-1].sort(data); W<h)HhyG
} hk;5w{t}}
f=+mIZ
public static interface Sort { ;}I:\P
public void sort(int[] data); '&P%C" 5
} ?.m bK
0Uz"^xO["
public static void swap(int[] data, int i, int j) { <q58uuK
int temp = data; :^lI`9'*R
data = data[j]; LRxZcxmy
data[j] = temp; MVpGWTH@F
} h:))@@7MJ
} 9Z$"K- G