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。 ;}UIj{sj*
插入排序: -U/I'RDLEz
K *
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package org.rut.util.algorithm.support; m0dFA<5-
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import org.rut.util.algorithm.SortUtil; }dV9%0s!
/** uJ2C+$=Ul
* @author treeroot \9&YV;Ct
* @since 2006-2-2 :< KSf#O
* @version 1.0 6)tB{:h&~0
*/ YzforM^F
public class InsertSort implements SortUtil.Sort{ yHa:?u6
,U} 5
/* (non-Javadoc) 'lQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3j[w
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*/ #n6FQ$l8m
public void sort(int[] data) { hlABu)B'1
int temp; j TB<E=WC
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); r"HbrQn
} X^?|Sz<^E
} 7]<F>97
} vV$hGS(f~
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} nN(D7wk
6!gtve_
冒泡排序: N|j;=y!
x"zjN'|
package org.rut.util.algorithm.support; ifgr<QlG
^Yg|P&e(;
import org.rut.util.algorithm.SortUtil;
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/** \N-|
iq
* @author treeroot ZC9.R$}Kl
* @since 2006-2-2 UH1S_:6
* @version 1.0 &deZ
*/ U{U:8==
public class BubbleSort implements SortUtil.Sort{ 4EaSg#
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/* (non-Javadoc) {7ZtOe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o|p;6
*/ KV)Hywl`
public void sort(int[] data) { d~P<M3#>
int temp; i_jax)m%
for(int i=0;i for(int j=data.length-1;j>i;j--){ #NVF\
if(data[j] SortUtil.swap(data,j,j-1); GDNh?R
} <MWXew7b
} 3_R
} 3<~2"@J
} QTrlQH&p
yP1Y3Tga=
} ~t.WwxY+
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选择排序: r=iMo7q
~_# Y,)S!z
package org.rut.util.algorithm.support; d
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import org.rut.util.algorithm.SortUtil; {YO%JTQ
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/** 8f6;y1!;
* @author treeroot R|Q_W X
* @since 2006-2-2 XeIUdg4>R
* @version 1.0 h.}t${1ZC
*/ AD!<%h:
public class SelectionSort implements SortUtil.Sort { N.Wdi
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/* qk+{S[2j
* (non-Javadoc) iz%A0Z+`bg
* #$vhC u<I
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "Wn?8vR
*/ P!4{#'_}
public void sort(int[] data) { |)72E[lL
int temp; 7gdU9c/q,
for (int i = 0; i < data.length; i++) { y}:)cA~o(y
int lowIndex = i; H2FFw-xW
for (int j = data.length - 1; j > i; j--) { EZwdx
if (data[j] < data[lowIndex]) { f2w=ln
lowIndex = j; C^\*|=*\
} 5M\=+5wB
} A 4W
SortUtil.swap(data,i,lowIndex); 9Sj:nn^/u
} Uf2v$Jl+Yh
} Kn!0S<ssR
z
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} _c(C;s3o
N|Cy!E=d
Shell排序: h<^:Nn
U<,Kw6K
package org.rut.util.algorithm.support; rO?x/{;ai
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import org.rut.util.algorithm.SortUtil; +GPT:\*q6
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/** ;MRC~F=
* @author treeroot
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* @since 2006-2-2 jcv1z v.
* @version 1.0 BtNW5'^
*/ QSs$
public class ShellSort implements SortUtil.Sort{ TXh@
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/* (non-Javadoc) )T};Q:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mP$G9R
*/ Jr>S/]"
public void sort(int[] data) { U3j~}H.D1
for(int i=data.length/2;i>2;i/=2){ >2Qqa;nx|
for(int j=0;j insertSort(data,j,i); PVkN3J
} Pq J*
} =[)N6XV 3
insertSort(data,0,1); y!6:
} ,M/#Q6P0}
>K|G LP
/** j_a~)o-p
* @param data 6 XOu~+7
* @param j iZq@W3GL
C
* @param i _l{5'm
*/ R;TEtu7
private void insertSort(int[] data, int start, int inc) { 548[!p4
int temp; 3P^gP32
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); =Z>V}`n
} -ynLuq#1A
} L5 k>;|SA
} (8-lDoW
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r$
} `7qp\vYL
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快速排序: !|:q@|-
%@
t|U2ws#
package org.rut.util.algorithm.support; ~j&:)a'^
k-ex<el)#
import org.rut.util.algorithm.SortUtil; 6[2?m*BsN
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/** cV_IG}LJ
* @author treeroot S.F=$z.%
* @since 2006-2-2 (jE:Q2"
* @version 1.0 5f*'wA
*/ vsz^B
:j
public class QuickSort implements SortUtil.Sort{ Nb!6YY=Ez-
UrcN?
/* (non-Javadoc)
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >eTgP._
*/ ]vkHU6d
public void sort(int[] data) { .f<VmUca
quickSort(data,0,data.length-1); fYQi#0drn
} i`nw"8
private void quickSort(int[] data,int i,int j){ ryp$|?ckJ
int pivotIndex=(i+j)/2; #Xw[i
file://swap . nF
SortUtil.swap(data,pivotIndex,j); kq.h\[
vgW1hWmHJ
int k=partition(data,i-1,j,data[j]); Cz);mOb%M%
SortUtil.swap(data,k,j); 4Z~Dxo
if((k-i)>1) quickSort(data,i,k-1); ^21f^>k(
if((j-k)>1) quickSort(data,k+1,j); 5F sj_wFk
yqb<<4I
} 2d;xAX ]
/** "X(=
* @param data !@Vp Bl
* @param i -zLI!F 0
* @param j {i}Q}OgYq
* @return ftU5A@(T
*/ Hr*Pi3 dSI
private int partition(int[] data, int l, int r,int pivot) { YB3=ij!K
do{
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while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); EbYH?hPo
SortUtil.swap(data,l,r); O#5( U.E
} cASHgm
while(l SortUtil.swap(data,l,r); <IDzv'
return l; 0:+uw`
%
} kBT}Siw
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} k\<Ln
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改进后的快速排序: 0\ w[_H
10 H!
package org.rut.util.algorithm.support; k Q(y^t W
_%TeTNY#
import org.rut.util.algorithm.SortUtil; EEZ2Gu6c
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/** / lM~K:
* @author treeroot 6Oba}`)q9
* @since 2006-2-2 8 (h
* @version 1.0 ^QQNJ
*/ sK/"
public class ImprovedQuickSort implements SortUtil.Sort { i6:yNb ='
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private static int MAX_STACK_SIZE=4096; "EhO )lR
private static int THRESHOLD=10; }~'Wz*Gm
/* (non-Javadoc) "}+/0$F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +mOtYfW
*/ [IBk-opap
public void sort(int[] data) { KL"L65g&
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; V"jnrNs3
int pivot;
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int pivotIndex,l,r; >b?)WNk
*9(1:N;#
stack[++top]=0; jyH_/X5i7
stack[++top]=data.length-1; K/+C6Y?
SY)$2RC+}
while(top>0){ [gp:nxyfQm
int j=stack[top--]; y]4`d
int i=stack[top--]; I8;[DP9
U?j> 28
pivotIndex=(i+j)/2; PSR`8z n
pivot=data[pivotIndex]; Y(Ezw !a
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SortUtil.swap(data,pivotIndex,j); H^:|`T|,
O~'yP@&`
file://partition J\D3fh97-
l=i-1; bu&y w~
r=j; z35Rjhj9
do{ $-fY 8V3[
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \U>Kn_7m
SortUtil.swap(data,l,r); E"&9FxS]^
} jUSr t)o03
while(l SortUtil.swap(data,l,r); 8~#Q *
SortUtil.swap(data,l,j); mxA )r5sx
%\&dFwb
if((l-i)>THRESHOLD){ wx5*!^&j
stack[++top]=i; Wj=ex3K3u.
stack[++top]=l-1; rXPx*/C
} #e>MNc
'z
if((j-l)>THRESHOLD){ dKpa5f7
stack[++top]=l+1; Bt3=/<.\
stack[++top]=j; |raQ]b@t&
} beZ| i 1:
n`Iy7X
} >v,j;[(
file://new InsertSort().sort(data); (r\h dLX
insertSort(data); MXV4bgltT
} 3~xOO*`o
/** =W*`HV-w
* @param data @0'|Uygn
*/ *7ro [
private void insertSort(int[] data) { bR,Iq}p
int temp; JhIK$Ti
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p;=(-4\V}
} (k&aD2PH
} 0*@S-Lj^c
} D +""o"%
5K~6`
} Ib2pV2`h(
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归并排序: AB\4+ CLV
n5>N9lc
package org.rut.util.algorithm.support; ZS_f',kE
{hR2NUm
import org.rut.util.algorithm.SortUtil; lXKZNCL
#K w\r50
/** V7_??L%Ct`
* @author treeroot <5~>.DuE
* @since 2006-2-2 4HE4e
* @version 1.0
+'.Q-
*/ hj,x~^cS
public class MergeSort implements SortUtil.Sort{ 7*"LW
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/* (non-Javadoc) _I4sy=tYXK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q:.BY}X9
*/ LWV`xCr8R
public void sort(int[] data) { -;"l5oX
int[] temp=new int[data.length]; J[wXG6M
mergeSort(data,temp,0,data.length-1); 1_lL?S3,a@
} w,9F riW
3v U (4}@
private void mergeSort(int[] data,int[] temp,int l,int r){ \]%U?`A
int mid=(l+r)/2; Y&:i^k
if(l==r) return ; 5K{h)* *5
mergeSort(data,temp,l,mid); OhEL9"\<
mergeSort(data,temp,mid+1,r); -m/4\D
for(int i=l;i<=r;i++){ qDAjW)w
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temp=data; T<)z2Bi
} M7 !"
t
int i1=l; p#2th`M:P1
int i2=mid+1; Z-(HDn
for(int cur=l;cur<=r;cur++){ U2$T}/@
if(i1==mid+1) a~>h'}C>
data[cur]=temp[i2++]; eVXbYv=gJ@
else if(i2>r) idy:Jei}
data[cur]=temp[i1++]; y9)",G!
else if(temp[i1] data[cur]=temp[i1++]; ^ BKr0~4A
else :TI1tJS~*
data[cur]=temp[i2++]; {+Yo&F}n
} 7<D_ h/WV
} y{JkY\g
F}>`3//u
} BYU.ptiJJ
[_n|n"M
改进后的归并排序: G2D<LRWt4
$ cSZX#\
package org.rut.util.algorithm.support; DAW%?(\,
?f..N,s
import org.rut.util.algorithm.SortUtil; Kq$1lPI
%R"Fx$tQ
/** {wI0 =U
* @author treeroot HrGX-6`
* @since 2006-2-2 =Frr#t!(w0
* @version 1.0 X)m2{@v D
*/ {'!~j!1'j
public class ImprovedMergeSort implements SortUtil.Sort { h#
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2|BE{91
private static final int THRESHOLD = 10; -;}Wm[
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/* kx[8#+P
* (non-Javadoc) E<dN=#f6
* t
,$)PV
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Y Ox`z!R
*/ WM26-nR
public void sort(int[] data) { A_%w(7o"
int[] temp=new int[data.length]; k1J}9HNYR
mergeSort(data,temp,0,data.length-1); 1 <+^$QL
} =xoTH3/,>
1o%Hn"uG
private void mergeSort(int[] data, int[] temp, int l, int r) {
t2iFd?
int i, j, k; nj
mE>2
int mid = (l + r) / 2; 7Y/_/t~Y
if (l == r) \m&:J>^
return;
r DuG["
if ((mid - l) >= THRESHOLD) Lrq&k40y
mergeSort(data, temp, l, mid); V
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else o;fQ,rP%
insertSort(data, l, mid - l + 1); \X!!(Z;6A
if ((r - mid) > THRESHOLD) 0W> ",2|z
mergeSort(data, temp, mid + 1, r); ;q Z2V
else K#jm6Xh?E
insertSort(data, mid + 1, r - mid); )1/O_N6C
6F2}|c
for (i = l; i <= mid; i++) { rQJoaP+\q
temp = data; YC~+r8ME$j
} F/8y p<_r
for (j = 1; j <= r - mid; j++) { 6]VTn-
temp[r - j + 1] = data[j + mid]; iYnt:C
} x>cu<,e$d\
int a = temp[l]; k4v[2y`
int b = temp[r]; ',f[y:v;
for (i = l, j = r, k = l; k <= r; k++) { U|=y&a2Rb
if (a < b) { *"@P2F&
data[k] = temp[i++]; I,D=ixK
a = temp; 'PZJ{8=
} else { Gx
m"HC
data[k] = temp[j--]; _N6GV$Q
b = temp[j]; ~&kV
} TUG3#PSnm*
} Mtu8zm
} xQQ6D
0!Yi.'+
/**
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* @param data 8QU`SoS9
* @param l f4q-wX_1
* @param i Jy9&=Qh
*/ 3I]5DW %-
private void insertSort(int[] data, int start, int len) { ]#`bYh^y
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [{YV<kN
} %llG/]q#
} l<5!R;?$
} zC7;Zj*k
} Z\x6
3jeR;N]x
堆排序: 5@Sb[za
b~r ?#2K
package org.rut.util.algorithm.support; 79\
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V;$lgTs|'
import org.rut.util.algorithm.SortUtil; ?S"xR0 *
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/** ?pFHpz
* @author treeroot 52oR^|
* @since 2006-2-2 /Mv'fich(
* @version 1.0
m{~r6@
*/ YV+e];s
public class HeapSort implements SortUtil.Sort{ B6BOy~B0
QFMS]
/* (non-Javadoc) ZEW`?6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K|iNEhuc
*/ rS=6d6@
public void sort(int[] data) { "QMHY\C
MaxHeap h=new MaxHeap(); Epx.0TA= t
h.init(data); t;'__">:q
for(int i=0;i h.remove(); _ v-sb(*
J
System.arraycopy(h.queue,1,data,0,data.length); jsuQR
} `|gCbs95
GFvOrRlP\
private static class MaxHeap{ BP` UB
yY}`G-)g~*
void init(int[] data){ T6tJwSS4:
this.queue=new int[data.length+1]; bcQ$S;U)
for(int i=0;i queue[++size]=data; U9Sp$$L
fixUp(size); dG1qrh9_-
} Rcu/ @j{O
} T+I|2HYqOj
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private int size=0; 6uD Nqq
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)J
private int[] queue; kM.zX|_
/Z^+K
public int get() { {9(N?\S1`a
return queue[1]; o^Ms(?K%t
} 44!bwXz8
E]bjI$j
public void remove() {
8$1<N
SortUtil.swap(queue,1,size--); ]1X];x&e
fixDown(1); V4|pZ]
} oC[$PPqX#
file://fixdown +?%huJYK,
private void fixDown(int k) { 'C(YUlT2?P
int j; X4jtti
while ((j = k << 1) <= size) { #U^@)g6
if (j < size %26amp;%26amp; queue[j] j++; X"yLo8y8$
if (queue[k]>queue[j]) file://不用交换 dD=dPi#
break; q?`bu:yS
SortUtil.swap(queue,j,k); F*QGzbv)
k = j; zH.7!jeE
} 0 j6/H?OT
} ^X^4R1V)
private void fixUp(int k) { zT.qNtU%
while (k > 1) { U`xjau+
int j = k >> 1; >XBLm`a
if (queue[j]>queue[k]) $cjidBi`):
break; zI&oZH^vn
SortUtil.swap(queue,j,k); Nx~8]h1(
k = j; B&cC;Hw
} *f1MgP*GKF
} b*7OIN5h
4jvgyi9
} O0e6I&u:
SwLul4V
} KATt9ox@
TwY]c<t
SortUtil: 4~D?F'o
d&F8nBIM5
package org.rut.util.algorithm; ~i(X{^,3
~qs97'
import org.rut.util.algorithm.support.BubbleSort; 4\>Cnc{
import org.rut.util.algorithm.support.HeapSort; Q1g@FsW&U
import org.rut.util.algorithm.support.ImprovedMergeSort; M*|x,K= U
import org.rut.util.algorithm.support.ImprovedQuickSort; WJ8i,7
import org.rut.util.algorithm.support.InsertSort; VGkwrS;+I
import org.rut.util.algorithm.support.MergeSort; t=5K#SX}
import org.rut.util.algorithm.support.QuickSort; K^EW*6vB8O
import org.rut.util.algorithm.support.SelectionSort; Ao(Xz$cQfW
import org.rut.util.algorithm.support.ShellSort; YHl6M&*@
IF<pT)
/** awGI|d
* @author treeroot (z\@T`6`
* @since 2006-2-2 }PD?x4
* @version 1.0 h>9GfF3
*/ }5\F <b^@Y
public class SortUtil { (z#qkKL{^
public final static int INSERT = 1; y^?7de}
public final static int BUBBLE = 2; Z%k)'%_
public final static int SELECTION = 3; )bXiw3'A
public final static int SHELL = 4; fQM:NI?9?
public final static int QUICK = 5; '`I&g8I\
public final static int IMPROVED_QUICK = 6; x8w455
public final static int MERGE = 7; CM_FF:<tn
public final static int IMPROVED_MERGE = 8; ;mu^WIj
public final static int HEAP = 9; 5$/ED3mcK
,,OO2EgZ`
public static void sort(int[] data) { pri=;I(2A
sort(data, IMPROVED_QUICK); 4u0=/pfi[
} gh#9<
private static String[] name={ xx_]e4
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" g ?qm >X
}; 1ve
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HTAJn_
private static Sort[] impl=new Sort[]{ e<#t]V
new InsertSort(), 9 "7(Jq
new BubbleSort(), `{#0C-
new SelectionSort(), zuwlVn
new ShellSort(), F|Pf-.r`t
new QuickSort(), akoK4!z
new ImprovedQuickSort(), +iY .Y V
new MergeSort(), R.-2shOE'
new ImprovedMergeSort(), @lRTp
new HeapSort() 9ePG-=5I
}; %We~k'2f
cia'h_w
public static String toString(int algorithm){ 9Ra*bP ]1
return name[algorithm-1]; nep0<&