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。 =IUUeFv +r
插入排序: E@P %v{)
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package org.rut.util.algorithm.support; ]ix!tb.Q
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import org.rut.util.algorithm.SortUtil; lRveHB&V
/** 6<' 21
* @author treeroot ^k
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* @since 2006-2-2 .58qL-iC
* @version 1.0 *bxzCI7b
*/ ZvUCI8
public class InsertSort implements SortUtil.Sort{ IXb}AxBf
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/* (non-Javadoc) OQ,NOiNkap
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3LfC{ER
*/ on8WQf'A#
public void sort(int[] data) { l/Vo-#
int temp; 0d3+0EN{
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !wWJ^Oz=
} ]XTu+T.aT
} TO-nD>
} JKX_q&bUw
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} wQ%mN[
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冒泡排序: 7^M9qTEHp
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package org.rut.util.algorithm.support; 7#~+@'Oe
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import org.rut.util.algorithm.SortUtil; <&!v1yR
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/** [y0O{,lI
* @author treeroot iA,kX\nK
* @since 2006-2-2 J-ePE7i
* @version 1.0 k2xHH$+{#=
*/ i[ $0a4
public class BubbleSort implements SortUtil.Sort{ Z lHDi!T
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/* (non-Javadoc) iL=
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [lk'xzE
*/ "7v-`i
public void sort(int[] data) { k@ K7yK
int temp; 3b YCOqG
for(int i=0;i for(int j=data.length-1;j>i;j--){ ~Aq5XI%i
if(data[j] SortUtil.swap(data,j,j-1); 720)VzT
} Pub0IIs
} 87WBM;$&s
} J|3E- p\o
} )?2e
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} )9S>ZZF
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选择排序: z`6fotL
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package org.rut.util.algorithm.support; $o +5/c?|
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import org.rut.util.algorithm.SortUtil; BI:k#jO!
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/** }dxDtqb
* @author treeroot {ls+dx/
* @since 2006-2-2 {}o>{&X
* @version 1.0 W[[bV
*/ >3gi yeJ
public class SelectionSort implements SortUtil.Sort { GdVhK:<>
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/* X1tXqHJF}
* (non-Javadoc) t |W)
* -B$~`2-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) efG6v
*/ "C?5f]T
public void sort(int[] data) { F/1#l@qN
int temp; +
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for (int i = 0; i < data.length; i++) { s!+"yK
int lowIndex = i; 4Iq'/r
for (int j = data.length - 1; j > i; j--) { z5*=MlZ)R.
if (data[j] < data[lowIndex]) { jEz+1Nl)
lowIndex = j; @=5qT]%U3J
} nJ?^?M'F%
} L&-hXGx=7
SortUtil.swap(data,i,lowIndex); $hR)i
} =TP(
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} D^U:
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} #&8}<8V
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Shell排序: 39 Y(!q
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package org.rut.util.algorithm.support; zNSu
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import org.rut.util.algorithm.SortUtil; 65,(4Udz!
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/** h5kPn~
* @author treeroot /$"[k2 N
* @since 2006-2-2 QFPfIb/
* @version 1.0 O;HY%
*/ GO! uwo:
public class ShellSort implements SortUtil.Sort{ fWGOP~0
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/* (non-Javadoc) o$.e^XL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x\s,= n3z
*/ pWE `x|J
public void sort(int[] data) { 6O2=Ns;J6
for(int i=data.length/2;i>2;i/=2){ 6
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for(int j=0;j insertSort(data,j,i); Q6C-4ja
} 'z=:[#b
} W2-=U@
insertSort(data,0,1); +~nzii3
} _U|7'^ |
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/** wyxGe<1
* @param data KyP)Qzp
* @param j K 3GSOD>
* @param i ~9Cz6yF
*/ uk`8X`'
private void insertSort(int[] data, int start, int inc) { qIwV q!=
int temp; fR-C0"c
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W</n=D<,I
} t j Vh^
} VyG4(Xva
} Z<b"`ty.
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} G&eP5'B4i
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快速排序: SKY*.IW/Z
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package org.rut.util.algorithm.support; FZpKFsPx
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import org.rut.util.algorithm.SortUtil; Lp:6 ;
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/** -qV{WZ Hp
* @author treeroot FdOFE.l
* @since 2006-2-2 X7*`
* @version 1.0 fn{S
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*/ J?:[$ C5
public class QuickSort implements SortUtil.Sort{ )wzV
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/* (non-Javadoc) Q}2[hB
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dpN@#w
*/ }b["Jk\2
public void sort(int[] data) { x4a:PuqmGG
quickSort(data,0,data.length-1); 6er(% 4!
} )E7 FA|
private void quickSort(int[] data,int i,int j){ T9y;OG
int pivotIndex=(i+j)/2; zjX7C~h^Q
file://swap ^DAa%u
SortUtil.swap(data,pivotIndex,j); u>T76,8|\
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int k=partition(data,i-1,j,data[j]); &$fbP5uAZ
SortUtil.swap(data,k,j); Xwu.AVsr
if((k-i)>1) quickSort(data,i,k-1); !#D=w$@r:
if((j-k)>1) quickSort(data,k+1,j); bNzqls$
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} vrl[BPI
/** *8g<R
* @param data ]Nk!4"
* @param i s'a= _cN
* @param j q{4|Kpx@
* @return fJ80tt?r
*/ +`| *s3M
private int partition(int[] data, int l, int r,int pivot) { :9d\Uj,
do{ ZKbDp~
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Db03Nk>#
SortUtil.swap(data,l,r); \ a-CN>
} Fq,N
while(l SortUtil.swap(data,l,r); o#i
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return l; nf%4sIQ*x
} |DG@ht
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} ^3I'y
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改进后的快速排序: -]"T^wib
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package org.rut.util.algorithm.support; E)'8U
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import org.rut.util.algorithm.SortUtil; qJs[i>P[W
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/** x6yW:tUG5
* @author treeroot ,r+"7$
* @since 2006-2-2 Etnb3<^[t
* @version 1.0 s^C;>
*/ c]m! G'L_/
public class ImprovedQuickSort implements SortUtil.Sort { [Z}B"
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private static int MAX_STACK_SIZE=4096; 3B18dv,V
private static int THRESHOLD=10; Q9y*:
/* (non-Javadoc) wa3F
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t3F?>G#y
*/ nmE5]Pcg
public void sort(int[] data) { B\<ydN
int[] stack=new int[MAX_STACK_SIZE]; a?<?5
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int top=-1; ;~tsF.=
int pivot; xUj2]Q>R+
int pivotIndex,l,r; N~#D\X^t.
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stack[++top]=0; ckwF|:e7*
stack[++top]=data.length-1; [yd6gH
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while(top>0){ &:vscOl
int j=stack[top--]; dK# h<q1
int i=stack[top--]; Y1r,2 k
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pivotIndex=(i+j)/2; 9/;{>RL=
pivot=data[pivotIndex]; cF.mb*$K
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SortUtil.swap(data,pivotIndex,j); M/w{&&
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file://partition EzP#Mnz^
l=i-1; bXl8v
r=j; AVpuMNd@
do{ Ow3a0cF[9
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 5#u.pu
SortUtil.swap(data,l,r); 3X'WR]
} eY3=|RR
while(l SortUtil.swap(data,l,r); i_Ar<9a~
SortUtil.swap(data,l,j); ?M"HXu
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if((l-i)>THRESHOLD){ 9t}xXk
stack[++top]=i; 8eww7k^R
stack[++top]=l-1; G2@KI-
} a/e\vwHLv
if((j-l)>THRESHOLD){ ;eR{tH /4
stack[++top]=l+1; qc-C>Ra
stack[++top]=j; |BJqy/
} x(6vh2#vD
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} Y(z}[`2
file://new InsertSort().sort(data); :0dfB&7
insertSort(data); !fZLQc
} {y/-:=S)A
/** M71R -B`-
* @param data (HSw%e
*/ ]PVto\B=
private void insertSort(int[] data) { j];G*-iv{
int temp; Kw*~W
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for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W"O-L
} }bgo )<i
} >Fh#DmQ
} ?d,M.o{0]
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} >W~=]&7{s4
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归并排序: GiqBzV3"
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package org.rut.util.algorithm.support; J(hA^;8:
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import org.rut.util.algorithm.SortUtil; iE+6UK
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/** E@]sq A
* @author treeroot (olLB
* @since 2006-2-2 TPqvp|~2
* @version 1.0 C$ hQN
*/ '{W3j^m7
public class MergeSort implements SortUtil.Sort{ KT%{G8Y@M
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/* (non-Javadoc) ,#Ln/;
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j #es2;
*/ #rq?f
public void sort(int[] data) { Y`=z.D{
int[] temp=new int[data.length]; UC;=)
mergeSort(data,temp,0,data.length-1); &$Ci}{{n#
} "_oLe;?$c
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private void mergeSort(int[] data,int[] temp,int l,int r){ G)4SWu0<t
int mid=(l+r)/2; m/" J
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if(l==r) return ; \3:
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mergeSort(data,temp,l,mid); ?GfxBZWJ
mergeSort(data,temp,mid+1,r); ip674'bq7R
for(int i=l;i<=r;i++){ 2i"HqAB
temp=data; %U:C|
} @oA0{&G{
int i1=l; ,aYU$~o#
int i2=mid+1; 0ZT 0
for(int cur=l;cur<=r;cur++){ Jbkt'Z(&J
if(i1==mid+1) W\a!Q]pV
data[cur]=temp[i2++]; 6,3}/hgWJ$
else if(i2>r) x36NL^
data[cur]=temp[i1++]; T#Fn:6_=
else if(temp[i1] data[cur]=temp[i1++]; Yim#Pq&_
else mMslWe
data[cur]=temp[i2++]; fxOE]d8v
} lnjL7x
} `L;OY 4
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} ifd}]UMQ
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改进后的归并排序: h%/ssB
#9INX`s-
package org.rut.util.algorithm.support; >waN;&>/
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import org.rut.util.algorithm.SortUtil; .h a`)@MsZ
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/** bbO+%-(X
* @author treeroot wyNC|P;j$g
* @since 2006-2-2 =}"R5
* @version 1.0 "W3W:vl!
*/ 3 ^pYCK%
public class ImprovedMergeSort implements SortUtil.Sort { :K:f^o]s
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private static final int THRESHOLD = 10; .dt#2a_5q
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/* u9 %;{:]h
* (non-Javadoc) 3m3
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* F],TG&>5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d`UF0T
*/ >
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public void sort(int[] data) { #*+;B93)
int[] temp=new int[data.length]; gfxoJihE
mergeSort(data,temp,0,data.length-1); ,R8n,az
} l,^xX=,
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private void mergeSort(int[] data, int[] temp, int l, int r) { 3V"dG1?
int i, j, k; ^z38<L=z"
int mid = (l + r) / 2; zv`zsqDJ
if (l == r) CJ0$;et
return; nhp)yW
if ((mid - l) >= THRESHOLD) n}+wd9J*!2
mergeSort(data, temp, l, mid); ?-4OfGN
else 2$iw/r
insertSort(data, l, mid - l + 1); QZ#3Bn%B5
if ((r - mid) > THRESHOLD) :l4^iSf
mergeSort(data, temp, mid + 1, r); ysL0hwir
else s87 a%
insertSort(data, mid + 1, r - mid); 33O)k*g
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for (i = l; i <= mid; i++) { i'U,S`L6>
temp = data; PnI)n=(\
} zI1(F67d`
for (j = 1; j <= r - mid; j++) { G,+xT}@wu
temp[r - j + 1] = data[j + mid]; N'I?fWN!;R
} PQ6T|>
int a = temp[l]; r$94J'_
int b = temp[r]; }{P&idkv
for (i = l, j = r, k = l; k <= r; k++) { _F! :(@}
if (a < b) { vM5k4%D
data[k] = temp[i++]; (H'_KPK
a = temp; GOUY_&}tL
} else { =;kRk.qzy
data[k] = temp[j--]; i:MlD5 F
b = temp[j]; lkI8{
} [^h/(a`
} "tqS|ok.
} unx;m$-c
3S;>ki4(0
/** :8GlyN<E
* @param data E=$7ieW
* @param l 8[vl3C
* @param i u!hqq^1
*/ Bidqf7v
private void insertSort(int[] data, int start, int len) { 6(\q< fx
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); B.{8/.4
} l_UXrnm/N
} rOs)B 21/
} $0S.@wUG
} e{c._zr,
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堆排序: U{j5kX
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package org.rut.util.algorithm.support; ]H@v
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