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。 ExKyjWAJ
插入排序: pf% yEz
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package org.rut.util.algorithm.support; 2y`X)
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import org.rut.util.algorithm.SortUtil; pGRk
/** K&4FFZ
* @author treeroot Wr+/9
* @since 2006-2-2 V
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* @version 1.0 :;Xh`br
*/ \JLea$TM:
public class InsertSort implements SortUtil.Sort{ )gVz?-u+D
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/* (non-Javadoc) mE"(d*fe'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :@@aIFRv
*/ ]621Z1
public void sort(int[] data) { 4$oDq
int temp; TTagZI$
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); P(xgIMc H
}
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} nPW=m`jG
} q x5jaa3
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} `(uN_zvH
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冒泡排序: N(J'h$E
6w`.'5
package org.rut.util.algorithm.support; ]!>tP,<`'
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import org.rut.util.algorithm.SortUtil; {zIcEN$ ~
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/** s|vx2-Cu]
* @author treeroot Egt !N
* @since 2006-2-2 #g#[|c.
* @version 1.0 f4;V7DJ
*/ Z~AgZM
R
public class BubbleSort implements SortUtil.Sort{ laRn![[
#EA` |
/* (non-Javadoc) a9_KoOa.H
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1lYQR`Uh
*/ L[voouaqm
public void sort(int[] data) { \MDhm,H<
int temp; K%.t%)A_3
for(int i=0;i for(int j=data.length-1;j>i;j--){ MK.TBv
if(data[j] SortUtil.swap(data,j,j-1); FtW=Cc`hC_
} ;$vVYC
} S&F[\4w5]
} |R;`
} m1D,#=C,_
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} .I Io
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选择排序: 5SEGV|%
LEg ?/!LIT
package org.rut.util.algorithm.support; kq*IC&y
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import org.rut.util.algorithm.SortUtil; LJSx~)@
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/** l0PXU)>C
* @author treeroot ,&iEn}xG7i
* @since 2006-2-2 /b]+RXvxj
* @version 1.0 p4uN+D`.U
*/ ?aQVaw&L!7
public class SelectionSort implements SortUtil.Sort { +h? Gps
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/* 06 an(&a9
* (non-Javadoc) +^q-v-
* 7O~hA*Z
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J ql$
g
*/ J;k8 a2$_
public void sort(int[] data) { !KtP> `8
int temp; s(:N>K5*
for (int i = 0; i < data.length; i++) { VVe^s|~Z
int lowIndex = i; *-3*51 jW
for (int j = data.length - 1; j > i; j--) { lQL/I[}
if (data[j] < data[lowIndex]) { bSW~hyI w
lowIndex = j; r.' cjUs
} %~\I*v04
} >CYz6G j
SortUtil.swap(data,i,lowIndex); ;?{OX
} c3)6{
} l]L"Ex{
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} @`nU=kY/
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Shell排序: \98|.EG
;It1i`!R
package org.rut.util.algorithm.support; Nkx W*w%}l
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import org.rut.util.algorithm.SortUtil; -yMD9b
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/** *X2dS
{
* @author treeroot v{) *P.E
* @since 2006-2-2 -l<[CI
* @version 1.0 Sr-!-eC
*/ !Xzy:
public class ShellSort implements SortUtil.Sort{ s-S|#5
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/* (non-Javadoc) zrV~7$HL
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R}$A>)%dx
*/
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public void sort(int[] data) { 3Ol`i$
for(int i=data.length/2;i>2;i/=2){ ?e hUGvV2
for(int j=0;j insertSort(data,j,i); @}tk/7-E
} 51puR8AG>
} -P'c0I9z
insertSort(data,0,1); { pu .l4nk
} XtIY8wsP
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/** nn/_>%Y
* @param data &Fl*,
* @param j \)BDl
* @param i 88+J(^y>
*/ L)_L#]Yy
private void insertSort(int[] data, int start, int inc) { `BY&&Bv#?
int temp; =)2!qoE
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); y_Nn%(j
} PxgLt2dXa
} }"AGX
} d+g+{p>?
zbP#y~[
} S.NLxb/
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快速排序: G 8F43!<
O\zGN/!
package org.rut.util.algorithm.support; 4vf,RjB-5
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import org.rut.util.algorithm.SortUtil; 8(0q,7)y
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/** .p(~/MnO
* @author treeroot <@:LONe<
* @since 2006-2-2 2~SjRIp Uw
* @version 1.0 (
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*/ }_o!fV
public class QuickSort implements SortUtil.Sort{ Q2ky|
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/* (non-Javadoc) #[ hJm'G
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~<w9a]
*/ e025m}%SU
public void sort(int[] data) { t /CE,DQ
quickSort(data,0,data.length-1); =H2.1 :'
} q=h~zjQ?R
private void quickSort(int[] data,int i,int j){ LVp*YOq7
int pivotIndex=(i+j)/2; Yet!qmZ
file://swap \~bE|jWbj
SortUtil.swap(data,pivotIndex,j); 8k`rj;
JOJ?.H&su
int k=partition(data,i-1,j,data[j]); Mlr}v^"G
SortUtil.swap(data,k,j); D$
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if((k-i)>1) quickSort(data,i,k-1); :]oR x
if((j-k)>1) quickSort(data,k+1,j); =e$6o 2!'}
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HYF
} RAW(lZ(
/** 0 SeDBs
* @param data z`[q$H7?
* @param i tJ,x>s?Y
* @param j ^UAL5}CQt
* @return )R`w{V
*/ `*=Tf
private int partition(int[] data, int l, int r,int pivot) { |4s`;4c&
do{ ^#VyI F3q
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &18CCp\3)c
SortUtil.swap(data,l,r); Z;#Ei.7p|
} HrZ\=1RB
while(l SortUtil.swap(data,l,r); ymLhSF][
return l; RjS&^uaP
} 9ZEF%&58Y
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} :}Tw+S5
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改进后的快速排序: `2@t) :
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package org.rut.util.algorithm.support; HV??B :
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import org.rut.util.algorithm.SortUtil; .Qp 5wCkM
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/** 5Q.bwl :
* @author treeroot !v2D 18(
* @since 2006-2-2 G2%%$7Jj
* @version 1.0 y+XB
*/ iG1vy'J#o
public class ImprovedQuickSort implements SortUtil.Sort { E:N~c'k
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private static int MAX_STACK_SIZE=4096; U'nz3
private static int THRESHOLD=10; ~ (xIG
/* (non-Javadoc) s wdW70
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |-hzvuSX
*/ %:/_O*~)Yg
public void sort(int[] data) { -O2ZrJ!q
int[] stack=new int[MAX_STACK_SIZE]; szC~?]<YY
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int top=-1; L_.BcRy
int pivot; JBCcR,\kM*
int pivotIndex,l,r; kne{Tp
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stack[++top]=0; k=<,A'y-/
stack[++top]=data.length-1; ;(Q4x"?I
qJj;3{X2
while(top>0){ H[guJ)4#@
int j=stack[top--]; 32=Gq5pOc
int i=stack[top--]; ;$G.?r
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pivotIndex=(i+j)/2; c,1Yxg]|
pivot=data[pivotIndex]; xn&G`
}!\ZJo a
SortUtil.swap(data,pivotIndex,j); n^|n6(EZ
e g#.f`
file://partition s% "MaDz
l=i-1; :luVsQ
r=j; 8kw`=wSH>
do{ &inu mc
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 9cAb\5c|
SortUtil.swap(data,l,r); 0A@'w*=
} mu2r#I
while(l SortUtil.swap(data,l,r); cs7TAX
SortUtil.swap(data,l,j); udDhJ?
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if((l-i)>THRESHOLD){ zR/d:P?
stack[++top]=i;
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stack[++top]=l-1; sn&y;Vc[$
} I|JMkP
if((j-l)>THRESHOLD){ *ta
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stack[++top]=l+1; "P=OpFV
stack[++top]=j; yc2c{<Ya5
} *
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:,5
imAsE;:
} h8oG5|Y
file://new InsertSort().sort(data); 8*3<Erv
insertSort(data); ua*k{0[
} _e$15qW+
/** V2cLwQ'0
* @param data v`MCV29!}
*/ }s=D,_}m
private void insertSort(int[] data) { 7wsn8_n9
int temp; '<~l%q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ppjd.
} S,Boutd
} ps"DL4*
} R+FBCVU&TJ
7.$0LN/a!Z
} D\ ]gIXg
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归并排序: 9D++SU2:}
XP<wHh
package org.rut.util.algorithm.support; /=A?O\B7
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import org.rut.util.algorithm.SortUtil; k/YEUC5
r k;k:<c
/** Vm6G5QwM
* @author treeroot 9(DS"fgC
* @since 2006-2-2 a:Jsi=
* @version 1.0 V #W,}+_Sz
*/ wl #Bv,xf
public class MergeSort implements SortUtil.Sort{ [ ps5;
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/* (non-Javadoc) DVt;I$
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z=B*s!G
*/ x?Doe`/6?
public void sort(int[] data) { {A]"/AC
int[] temp=new int[data.length]; Y&KI/]ly,L
mergeSort(data,temp,0,data.length-1); }YWLXxb;
} 9 o6ig>C
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private void mergeSort(int[] data,int[] temp,int l,int r){ /)Bk
r/
int mid=(l+r)/2; R!b<Sg
if(l==r) return ; .'JO7of
mergeSort(data,temp,l,mid); p9Zi}!
mergeSort(data,temp,mid+1,r); j'FSd*5m
for(int i=l;i<=r;i++){ a]-F,M J
temp=data; _0ki19rs
} XQ]no aU
int i1=l; T Z{';oU
int i2=mid+1; b?eIFI&w^l
for(int cur=l;cur<=r;cur++){ ;`',M6g
if(i1==mid+1) x9q?^\x
data[cur]=temp[i2++]; :["iBrFp
else if(i2>r) ~kPHf_B;z
data[cur]=temp[i1++]; Jt5\
else if(temp[i1] data[cur]=temp[i1++]; "vI:B}
else b{JcV
data[cur]=temp[i2++]; 7p*PDoM6`
} tIfA]pE
} Uo?g@D
_|reo6
} Y!s94#OaZ
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改进后的归并排序: #v+2W
V
.+ mK|)
package org.rut.util.algorithm.support; cB#5LXbCE
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import org.rut.util.algorithm.SortUtil; ;Gixu9u'
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/** C$?gt-tJ'
* @author treeroot __N<
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* @since 2006-2-2 Ahl-EVIr<
* @version 1.0 :}(Aq;}X
*/ 1;8=,&
public class ImprovedMergeSort implements SortUtil.Sort { Aiyx!Q6vT
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private static final int THRESHOLD = 10; *|WS,
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/* &h^E_]P
* (non-Javadoc) Bv-|#sdxm
* \cJ?2^Eq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZcJa:
*/ {jdtNtw
public void sort(int[] data) { CVUA7eG+
int[] temp=new int[data.length]; y2Eq-Ie
mergeSort(data,temp,0,data.length-1); xAJ
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} 2kukQj(n
C7PVJnY0
private void mergeSort(int[] data, int[] temp, int l, int r) { u NmbR8Mx
int i, j, k; >Sc)?[H
int mid = (l + r) / 2; RHO| g0
if (l == r) 80J87\)
return; U'4j+vUc
if ((mid - l) >= THRESHOLD) ?X
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mergeSort(data, temp, l, mid); T0HNld
else bsClw
insertSort(data, l, mid - l + 1); ky4;7RK
if ((r - mid) > THRESHOLD) c_V^~hq
mergeSort(data, temp, mid + 1, r); wPr9N}rf
else XotiKCk|Aq
insertSort(data, mid + 1, r - mid); (U_`Q1Jo
0FN;^hP5|
for (i = l; i <= mid; i++) { \NZ(Xk
temp = data; I:|<};mm
} |ty?Ah,vb
for (j = 1; j <= r - mid; j++) { TEJn;D<1I,
temp[r - j + 1] = data[j + mid]; q8Jhs7fv
} ]S
int a = temp[l]; 3#\++h]QZ
int b = temp[r];
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for (i = l, j = r, k = l; k <= r; k++) { SI)QX\is8
if (a < b) { 4*0C_F@RX
data[k] = temp[i++]; bwR$910b
a = temp; (r6'q0[
} else { I3I1<}>]Z
data[k] = temp[j--]; {{:QtkN
b = temp[j]; lwSZpS
} yf4I<v$y
} \=1$$EDS9
} CE5A^,EsB
']bw37_U,
/** q"@>rU4
* @param data r5,V-5b
* @param l g)Tr#
* @param i WWEZTFL:j
*/ }AW"2<@
private void insertSort(int[] data, int start, int len) { +,Ud 3iS
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); V?L8BRnV
} w!%"b03q
} Qx")D?u
} H 8x66}
} ""@kBY1C
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堆排序: =vs]Kmm
i7XM7+}
package org.rut.util.algorithm.support; 3<x1s2U
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import org.rut.util.algorithm.SortUtil; Jn&^5,J]F8
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/** ^`S.Mw.
* @author treeroot nYnBWDnV
* @since 2006-2-2 OWys`2W
* @version 1.0 ,W| cyQ
*/ [xdi.6%
public class HeapSort implements SortUtil.Sort{ / q| o
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/* (non-Javadoc) HfPu~P
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +;ylld
*/ %Ze]6TP/><
public void sort(int[] data) { %M*2 j%6
MaxHeap h=new MaxHeap(); 2EH0d6nt
h.init(data); ES)@iM?5
for(int i=0;i h.remove(); N(l
System.arraycopy(h.queue,1,data,0,data.length); der\"?_.
} `F$lO2 #k
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private static class MaxHeap{ Aw]kQ\P&
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void init(int[] data){ jdIAN
this.queue=new int[data.length+1]; I}+9@d
for(int i=0;i queue[++size]=data; gW-mXb
fixUp(size); Mi} .
} ]
T<#bNK\1
} W1&"dT@
||))gI`3a
private int size=0; &^7(?C'u
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private int[] queue; u}.mJDL
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public int get() { FeNNzV=
return queue[1]; A">R-1R
} >9NC2%61S
P Ij
public void remove() { \hWac%#
SortUtil.swap(queue,1,size--); Q*hXFayx
fixDown(1); eQwvp`@"
} Jflm-Hhsf
file://fixdown J$U_/b.mk
private void fixDown(int k) { g2?yT ?
int j; p<<dj%
while ((j = k << 1) <= size) { NwVhJdo
if (j < size %26amp;%26amp; queue[j] j++; '6cXCO-_P
if (queue[k]>queue[j]) file://不用交换 vY7@1_"
break; y'!"GrbZ
SortUtil.swap(queue,j,k); B3<sSe8L0
k = j; lL&U
ioo}D
} DYoGtks(
} l.P;85/+
private void fixUp(int k) { CEVisKcE:
while (k > 1) { -Jf}3$Ra
int j = k >> 1; cbYQ';{
if (queue[j]>queue[k]) <kk!ns I
break; ,pY:kQ
SortUtil.swap(queue,j,k); G^';9 UK
k = j; EywBT
} G)q;)n;*=
} cTq;<9Iew
3~{0X-
} DJ9x?SL@KD
A+j!VM
} W4bN']?
;E,i
SortUtil: p:)=i"uL
S503b*pM
package org.rut.util.algorithm; w:/3%-
kZ PL$\/A
import org.rut.util.algorithm.support.BubbleSort;
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import org.rut.util.algorithm.support.HeapSort; `(ik2#B`}
import org.rut.util.algorithm.support.ImprovedMergeSort; T2n3g|4
import org.rut.util.algorithm.support.ImprovedQuickSort; S>)[n]f
import org.rut.util.algorithm.support.InsertSort; %WC^aKfY
import org.rut.util.algorithm.support.MergeSort; #h P>IU
import org.rut.util.algorithm.support.QuickSort; &F:.OVzX
import org.rut.util.algorithm.support.SelectionSort; ^^lx Ot
import org.rut.util.algorithm.support.ShellSort; :[CEHRc7x
mlPvF%Ba
/** !>V)x
* @author treeroot , 6Jw
* @since 2006-2-2 Qm=iCZ|E^!
* @version 1.0 xI.0m
*/ ~4|Tr z2T
public class SortUtil { 'c_K[p$
public final static int INSERT = 1; 5fMlOP_
public final static int BUBBLE = 2; Pf/8tXs}
public final static int SELECTION = 3; 0yvp>{;p
public final static int SHELL = 4; :wN!E{0j
public final static int QUICK = 5; t-5Y,}j
public final static int IMPROVED_QUICK = 6; k]^ya?O]p
public final static int MERGE = 7; oh@Ha?
public final static int IMPROVED_MERGE = 8; !.-u'6e
public final static int HEAP = 9; 0qIg:+l+
7A) E4f'
public static void sort(int[] data) { B,&QI&k`~
sort(data, IMPROVED_QUICK); y=.bn!u}z
} J .VZD
private static String[] name={ O;5lF
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?;H}5>^8P
}; x7Gf):,LK
ktS^^!,l%
private static Sort[] impl=new Sort[]{ L|}s Z\2!
new InsertSort(), [[w |
new BubbleSort(), nM Z)x-
new SelectionSort(), qGX#(,E9;
new ShellSort(), +jK-k_
new QuickSort(), IibYG F
new ImprovedQuickSort(), H
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new MergeSort(), N|Ag8/2A
new ImprovedMergeSort(), q3#+G:nh
new HeapSort() (Q @'fb9z
}; x$bUd 9
aL`wz !
public static String toString(int algorithm){ "<{|ni}
return name[algorithm-1]; ,p OGT71
}
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public static void sort(int[] data, int algorithm) { "*.N'J\
impl[algorithm-1].sort(data); }r! +wp
} t=xEUOQAn
qTN%9!0@9
public static interface Sort { 9(nq 4HvI
public void sort(int[] data); F>3 o0ke}
} k& +gkJm
_ziSH 3(
public static void swap(int[] data, int i, int j) { .c~z^6x
int temp = data; D/~1?p
data = data[j]; aidQ,(PDj
data[j] = temp; "bDj00nwh
} }]PHE(}7
} \D(3~y>