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。 nSiNSLv
插入排序: K=)R!e8
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package org.rut.util.algorithm.support; -EaZ<d[|0
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import org.rut.util.algorithm.SortUtil; 0Kk*~gR?
/** ]IV;>94[
* @author treeroot HWBom8u0
* @since 2006-2-2 oUSG`g^P(M
* @version 1.0 (^9M9+L[i
*/ 4vS!99v)
public class InsertSort implements SortUtil.Sort{ aO%FQ)BT
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/* (non-Javadoc) M(uB
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L#Y;a
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*/ 9(WC#-,
public void sort(int[] data) { PEIr-qs%D
int temp; BaAb4{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *Rh .s!@4
} 9A(K_d-!H
} I "2FTGA
} P0z{R[KBH
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} X~3P?O]kFv
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冒泡排序: 55b |zf
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package org.rut.util.algorithm.support; :<8V2
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import org.rut.util.algorithm.SortUtil; ,
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/** )du{ZWr
* @author treeroot Ue:T3jp3%
* @since 2006-2-2 B31-<w
* @version 1.0 &X,)+b=
*/ zEfD{I
public class BubbleSort implements SortUtil.Sort{ ~|C1$.-
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/* (non-Javadoc) |qDfFGYf
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #!,`EU
*/ guXpHF=
public void sort(int[] data) { {Y%=/ba W
int temp; Bqlc+d:
for(int i=0;i for(int j=data.length-1;j>i;j--){ F$p*G][
if(data[j] SortUtil.swap(data,j,j-1); >%dAqYi $
} m(:qZW
} K0=E4>z,`q
} wLe&y4
} \<x_96jt!\
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} 0]W]#X4A
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选择排序: nY-9
1q?Y
x>"JWD
package org.rut.util.algorithm.support; q.[[c
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import org.rut.util.algorithm.SortUtil; PVc|y.
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/** T)tHN#6I
* @author treeroot Nw&}qSN
* @since 2006-2-2 FXEfD"
* @version 1.0 @<yc .>
*/ "d>g)rvOc
public class SelectionSort implements SortUtil.Sort { g]
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/* y"L`bl A9}
* (non-Javadoc) OrJlHMz
* A<CXd t+t
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <O)X89dFM
*/ Fd,+(i D
public void sort(int[] data) { MGyB8(
int temp; vek:/'sj3p
for (int i = 0; i < data.length; i++) { YGV#.
int lowIndex = i; xp8f
for (int j = data.length - 1; j > i; j--) { f%[ukMj&
if (data[j] < data[lowIndex]) { n9fA!Wic
lowIndex = j; KM(9&1/
} 9.OwH(Ax7
} }d\Tk(W
SortUtil.swap(data,i,lowIndex); c1A G3Nb
} [67E5rk-
} pW--^aHu
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} yO,`"Dc_0
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Shell排序: [x p,&
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package org.rut.util.algorithm.support; a(DZGQ-as
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import org.rut.util.algorithm.SortUtil; hd
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/** $gl<{{
* @author treeroot 8u5
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* @since 2006-2-2 xm,`4WdG
* @version 1.0 fDEu%fUYZ
*/ BS,5W]ervE
public class ShellSort implements SortUtil.Sort{ hB}h-i(u
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/* (non-Javadoc) 1mVVPt^6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 27 145
*/ 1H,tP|s
public void sort(int[] data) { b801OF
for(int i=data.length/2;i>2;i/=2){ T'b/]&0Tio
for(int j=0;j insertSort(data,j,i); K7xWE,y
} [kuVQ$)
} *xo;pe)9
insertSort(data,0,1); #DK3p0d
} YaNH.$.:
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/**
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* @param data ?9gTk
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* @param j 9ze| s^
* @param i ?X#/1X%u:
*/ hUT^V(
private void insertSort(int[] data, int start, int inc) { ^2C /!Y<
int temp; iA3>X-x
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); euj8p:+X
} 0oj{e9h
} !H1tBg]5
} <ql w+RVt
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} qQxA@kdd
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快速排序: '-PMF~~S
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package org.rut.util.algorithm.support; S'!q}|7X3
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import org.rut.util.algorithm.SortUtil; 8@%mnyQ
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/** V'"I9R'1
* @author treeroot EzIs@}
* @since 2006-2-2 O b8B
* @version 1.0 JS/M~8+Et
*/ :/v,r=Y9p
public class QuickSort implements SortUtil.Sort{ Jh43)#G-
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/* (non-Javadoc) (/SGT$#8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^.D}k
*/ OpK.Lsd0y
public void sort(int[] data) { %-#
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quickSort(data,0,data.length-1); xEVLE,*?>
} `s`C{|wv
private void quickSort(int[] data,int i,int j){ 3duG.iUlL
int pivotIndex=(i+j)/2; fimb]C I|x
file://swap ^Ue0mC7m
SortUtil.swap(data,pivotIndex,j); \9] I#Ih}M
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int k=partition(data,i-1,j,data[j]); ]^:hyOK
SortUtil.swap(data,k,j); aUW/1nQHa
if((k-i)>1) quickSort(data,i,k-1); `l>93A
if((j-k)>1) quickSort(data,k+1,j); y !<'rg
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} q]6_rY.
/** [IX*sr
* @param data iW|s|1mh3
* @param i PMgQxM*h
* @param j =n-z;/NL
* @return Q !9HA[Ly
*/ JFM"ii{8
private int partition(int[] data, int l, int r,int pivot) { 9<|m4
do{ @iU%`=ziz
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &P
8!]:
SortUtil.swap(data,l,r); ~->Hlxze'K
} W.A1m4l58R
while(l SortUtil.swap(data,l,r); y(bsCsV&
return l; 8p (!]^z
} Z-)[1+Hs
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} b'velj3A
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改进后的快速排序: [E>R.Oe
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package org.rut.util.algorithm.support; %O#)Nq>mp
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import org.rut.util.algorithm.SortUtil; rdO@X9z
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/** mZwi7s&u
* @author treeroot BlXX:aZv
* @since 2006-2-2 a{h%DpG
* @version 1.0 $ye^uu;Z
*/ 4d!S#zx
public class ImprovedQuickSort implements SortUtil.Sort { h4f~5- Y
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private static int MAX_STACK_SIZE=4096; -#Np7/
private static int THRESHOLD=10; <^xfcYx\
/* (non-Javadoc) wL;]1&Qq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])
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*/ #wr2imG6
public void sort(int[] data) { ,Ij=b
int[] stack=new int[MAX_STACK_SIZE];
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int top=-1; zK=dzoy
int pivot; o]A XT8
int pivotIndex,l,r; 5^yG2&>#
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stack[++top]=0; kl"
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stack[++top]=data.length-1; hp*<x4%*a"
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while(top>0){ N[pZIH5ho=
int j=stack[top--]; !Cw!+fZ\l
int i=stack[top--]; MU|{g
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)
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pivotIndex=(i+j)/2; [OzzL\)3l
pivot=data[pivotIndex]; 0 h22V$
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SortUtil.swap(data,pivotIndex,j); Rp0|zP,5
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file://partition cf)J )
l=i-1; n12UBvc}%
r=j; S_2"7
do{ 3L>d!qD
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L1wZU, o
SortUtil.swap(data,l,r); `m%:rE,
} %nWe,_PjD
while(l SortUtil.swap(data,l,r); w:}C8WKw
SortUtil.swap(data,l,j); Nsn~@.UuSW
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if((l-i)>THRESHOLD){ 34ha26\np
stack[++top]=i; ~Q?!W0ZBE
stack[++top]=l-1; nd:E9:
} ZHCr2^w6
if((j-l)>THRESHOLD){ J*j5#V];
stack[++top]=l+1; gz;&u)
stack[++top]=j; D{cZxI
} JS!*2*Wr
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} t,h{+lYU
file://new InsertSort().sort(data); o-z &7@3Hu
insertSort(data); Iq^if>
} 7d;pvhnH
/** hL!QLiF:
* @param data Bd5+/G=m
*/ XX2h(-
private void insertSort(int[] data) { G`F8!O(
int temp; F~6#LT
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); i)8N(HN
} +{$QAjW(/
} @*(4dt:V
} F\:(*1C
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} ,gMy@
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归并排序: R*9NR,C
pZk6w1d!
package org.rut.util.algorithm.support; }"_j0ax
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import org.rut.util.algorithm.SortUtil; ]Bnwk
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/** RV+E^pkp$
* @author treeroot _1L(7|^~y[
* @since 2006-2-2 .VM3D0aV
* @version 1.0 qaVy.
*/ ^aF8wbuZ
public class MergeSort implements SortUtil.Sort{ c#lPc>0xb
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/* (non-Javadoc) c0ez/q1S
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I
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*/ V*RdDF7
public void sort(int[] data) { \.#p_U5In
int[] temp=new int[data.length]; *hdC?m._
mergeSort(data,temp,0,data.length-1); iev>9j
} B4ZIURciGz
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private void mergeSort(int[] data,int[] temp,int l,int r){ r-IT(DzkD
int mid=(l+r)/2; y'}O)lO1
if(l==r) return ; VK:8 Nk_y
mergeSort(data,temp,l,mid); S~NM\[S
mergeSort(data,temp,mid+1,r); 'O?~p55T
for(int i=l;i<=r;i++){ jb[!E^'&>
temp=data; xHo&[{
} z;Q<F
int i1=l; Ai"-w"
int i2=mid+1; X!tf#tl
for(int cur=l;cur<=r;cur++){ 0F:1\9f5
if(i1==mid+1) xW_yLbE
data[cur]=temp[i2++]; =IjQ4 0W
else if(i2>r) _S@aGw
data[cur]=temp[i1++]; @=Fi7M
else if(temp[i1] data[cur]=temp[i1++]; U@F)2?
else RJ4.
kt
data[cur]=temp[i2++]; }uY!(4Rw
} 6l\FIah@
} )]43R
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} atF?OP|{,w
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改进后的归并排序: }{[mrG
{ZsdLF#
package org.rut.util.algorithm.support; A,gEM4
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import org.rut.util.algorithm.SortUtil; Wu1{[a|
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/** XORk!m|
* @author treeroot 'gso'&Uaj
* @since 2006-2-2 ut2~rRiK
* @version 1.0 !j:`7PT\
*/ As&vFt P
public class ImprovedMergeSort implements SortUtil.Sort { OJAIaC\
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private static final int THRESHOLD = 10; qk/:A+
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/* xiblPF_n3
* (non-Javadoc) I=DxRgt
* zj{r^D$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3< Od0J
*/ g\SrO {*
public void sort(int[] data) { Z{6kWA3Kk
int[] temp=new int[data.length]; Cq)IayD@
mergeSort(data,temp,0,data.length-1); I@#;nyAj"
} tWeFEVg
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private void mergeSort(int[] data, int[] temp, int l, int r) { SQ*k =4*r
int i, j, k; Q]/Uq~m C
int mid = (l + r) / 2; [U@;\V$
if (l == r) {LHR!~d}5f
return; IuF_M<d,
if ((mid - l) >= THRESHOLD) \!]hU%Un
mergeSort(data, temp, l, mid); mEyK1h1G@
else LUX*P7*B
insertSort(data, l, mid - l + 1); y
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if ((r - mid) > THRESHOLD) ~@ jY[_
mergeSort(data, temp, mid + 1, r); EZ;"'4;W
else =3ioQZ^Vz
insertSort(data, mid + 1, r - mid); !~]<$WZV
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for (i = l; i <= mid; i++) { 6z0@I*
temp = data; w;UqEC V
} 8lF\v /vN
for (j = 1; j <= r - mid; j++) { SP* fv`
temp[r - j + 1] = data[j + mid]; CIU1R;
} mrIh0B:`
int a = temp[l]; m%;D
int b = temp[r]; W14F
for (i = l, j = r, k = l; k <= r; k++) { ;5-r_D;9
if (a < b) { 5tjP6Z`!9`
data[k] = temp[i++];
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a = temp; b45|vX+j
} else { goat<\a
data[k] = temp[j--]; k>x&Ip8p
b = temp[j]; WQyLf;!Lz
} p'7*6bj1
} l3Njq^T
} DejA4XdW
h$eEn l}
/** y Rp"jcD
* @param data toN^0F?Qm
* @param l ,p(<+6QZ
* @param i RrUBpqA
*/ qTZFPfyU
private void insertSort(int[] data, int start, int len) { !Z
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for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xGTP;NT_H
} kmzH'wktt
} lj+u@Z<xA
} Zo1,1O
} ]Q]W5WDe:
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堆排序: ]smkTo/
uqz]J$
package org.rut.util.algorithm.support; R.=}@oPb
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import org.rut.util.algorithm.SortUtil; N?Lb
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/** |rm g#;/D
* @author treeroot V#VN%{
* @since 2006-2-2 Xpzfm7CB/
* @version 1.0 ca+5=+X7
*/ df7wN#kO+
public class HeapSort implements SortUtil.Sort{ 9tF9T\jW
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/* (non-Javadoc) Eke5Nb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n:MdYA5,m
*/ boDt`2=
public void sort(int[] data) { 8M!:N(a
MaxHeap h=new MaxHeap(); *_>Lmm.yh
h.init(data); )"Ztlhs`#
for(int i=0;i h.remove(); D3|I:Xm
System.arraycopy(h.queue,1,data,0,data.length); p/+a=Yo
} ;!(<s,c#:
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private static class MaxHeap{ sQkhwMg
t!RiU ZAo
void init(int[] data){ N7e"@Ic
this.queue=new int[data.length+1]; 1GzAG;UUo6
for(int i=0;i queue[++size]=data; k:7(D_
fixUp(size); -GxaV #{
} W6Y]N/v3>
} 21"1NJzP
|1j["u1
private int size=0; dAuJXGo
j]`PSl+w
private int[] queue; l\i)$=d&g
TYW&!sm
public int get() { EFz&N\2
return queue[1]; ]\|VpIg
} 0Vx.nUQ
%7|9sQ:
public void remove() { &Xf}8^T<V
SortUtil.swap(queue,1,size--); YPxM<Gfa8
fixDown(1); .mR8q+I6
} {;2PL^i
file://fixdown _bNzXF
private void fixDown(int k) { q.;u?,|E/
int j; GWfL
while ((j = k << 1) <= size) { v/ _
if (j < size %26amp;%26amp; queue[j] j++; wRVUu)
if (queue[k]>queue[j]) file://不用交换
$ ` ""
break; nR*ryv
SortUtil.swap(queue,j,k); W)bLSL]`E
k = j; T:~vk.Or
} 7<*yS310
} ^~etm
private void fixUp(int k) { j:v@pzTD
while (k > 1) { ?{[
v+t#
int j = k >> 1; |!4K!_y
if (queue[j]>queue[k]) +{oG|r3L
break; p>huRp^w
SortUtil.swap(queue,j,k); (JOgy.5C~
k = j; iUN Ib
} " )1V]}+m
} K|[*t~59
H:V2[y8\
} GB=X5<;
a!v1M2>
} @J/K-.r
n"c[,k+R`U
SortUtil: H*PSR
WvY?
+JXJ
package org.rut.util.algorithm; {ttysQ-
yd
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import org.rut.util.algorithm.support.BubbleSort; JkbQyn
import org.rut.util.algorithm.support.HeapSort; Wi)_H$KII
import org.rut.util.algorithm.support.ImprovedMergeSort; nWw":K<@Q_
import org.rut.util.algorithm.support.ImprovedQuickSort; + R~'7*EI
import org.rut.util.algorithm.support.InsertSort; ^'PWI{ O
import org.rut.util.algorithm.support.MergeSort; m+]K;}.}R
import org.rut.util.algorithm.support.QuickSort; NXrJfp
import org.rut.util.algorithm.support.SelectionSort; 3EPv"f^V
import org.rut.util.algorithm.support.ShellSort; ?Lk)gO^C
o6.^*%kM'
/** rC^WPW
* @author treeroot s Z].8.
* @since 2006-2-2 yPb" V
* @version 1.0 V Y7[)
*/ Yi.N&