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。 fT\:V5-
插入排序: c~}l8M%
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package org.rut.util.algorithm.support; XKOUQc4!R
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import org.rut.util.algorithm.SortUtil; Sb2v_o
/** +xv!$gJEj
* @author treeroot z`Wt%tL(
* @since 2006-2-2 oih5B<&f#
* @version 1.0 c,EBF\r8*
*/ \/`?
public class InsertSort implements SortUtil.Sort{ LwqC~N
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/* (non-Javadoc) jR ~DToQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !v|ISyK
*/ IE~%=/|
public void sort(int[] data) { {BBw$m, o
int temp; RrrK*Fk8=
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); W[bmzvJ_X
} ;E;To\NCYF
} V)M1YZV{
} 5X.ebd;PT
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} %hS|68pN6
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冒泡排序: 5i6
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package org.rut.util.algorithm.support; &Nl2sey
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import org.rut.util.algorithm.SortUtil; 5E\#%K[
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/** 83~ i:+;
* @author treeroot pcS+o
* @since 2006-2-2 @ T;L$x
* @version 1.0 FwAKP>6 *
*/ \BV
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public class BubbleSort implements SortUtil.Sort{ U
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/* (non-Javadoc) w?vVVA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5MTgK=c
*/ Lm*VN~2
public void sort(int[] data) { .
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int temp; 0BPMmk
for(int i=0;i for(int j=data.length-1;j>i;j--){ &[R8Q|1j
if(data[j] SortUtil.swap(data,j,j-1); 8^^[XbH
} j`*N,*ha
} r{Rg920
} yTM3^R(
} V3N0Og3
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} H!IshZfktn
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选择排序: LE^G&<!
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package org.rut.util.algorithm.support; 0'Z\O
SkNre$>t{
import org.rut.util.algorithm.SortUtil; L6P1L)
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/** 5`[n8mU
* @author treeroot ^)yTBn,
* @since 2006-2-2 G* b2,9&F
* @version 1.0 yBed kj
*/ \,UZX&ip
public class SelectionSort implements SortUtil.Sort { ;;s* Ohh
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/* Y(VJbm`
* (non-Javadoc) x|64l`Vp(:
* B6P|Z%E;D6
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V}w;Y?]J
*/ aT l c
public void sort(int[] data) { M[5[N{
int temp; xG&SX#[2
for (int i = 0; i < data.length; i++) { +#J,BKul
int lowIndex = i; \$*$='6"
for (int j = data.length - 1; j > i; j--) { &O\(;mFc
if (data[j] < data[lowIndex]) { Kr`]_m
lowIndex = j; +V862R4,o
} q~K(]Ya/
} @JkK99\(>9
SortUtil.swap(data,i,lowIndex); &F$:Q:* *
} d5I f"8`@
} ]<uQ.~
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} 8[%Ao/m
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Shell排序: Mn: /1eY
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package org.rut.util.algorithm.support; -ZOBAG*
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import org.rut.util.algorithm.SortUtil; ^}yg%+
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/** ra '
* @author treeroot ,hxkk`
* @since 2006-2-2 N6QVt f.
* @version 1.0 I 8
*/ u0`o A
public class ShellSort implements SortUtil.Sort{ N6oq90G
#1-xw~_
/* (non-Javadoc) ~vdkFc(8B
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tCF&OOI4`
*/ cF T 9Lnz
public void sort(int[] data) { {4 >mc'dv
for(int i=data.length/2;i>2;i/=2){ bEuaOBc
for(int j=0;j insertSort(data,j,i); v0*N)eqDGd
} %!Q`e79g8
} N@o?b
insertSort(data,0,1); xh@-g|+g
} 9<CG s3\
g\A
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/** YMpf+kN
* @param data \6|/RFT
* @param j ,FQdtNMap
* @param i 0IM8
*/ "R
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private void insertSort(int[] data, int start, int inc) { woH)0v
int temp; =/Aj
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 72oWhX=M%
} s0UFym8
} qd@&59zSh
} )4Q?aMm
o;F" {RZ
} 6`01EIk
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快速排序:
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pe0x""K
package org.rut.util.algorithm.support; Ft{[ae?4
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import org.rut.util.algorithm.SortUtil; G)=HB7u[a
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/** ^S)TO}e
* @author treeroot }71LLzG`/
* @since 2006-2-2 Z5G!ct:W
* @version 1.0 (3vHY`9
*/ &7?R+ZGo
public class QuickSort implements SortUtil.Sort{ DdV'c@rq+
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/* (non-Javadoc) F-Z%6O,2
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?^HfNp9
*/ OIb
public void sort(int[] data) { m,LG=s
quickSort(data,0,data.length-1); 8Ad606
} 4NVV5_K a
private void quickSort(int[] data,int i,int j){ dmrps+L
int pivotIndex=(i+j)/2; `A%^UCd
file://swap Z*{]
,
SortUtil.swap(data,pivotIndex,j);
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YL^=t^!4
int k=partition(data,i-1,j,data[j]); -!qu"A:
SortUtil.swap(data,k,j); w6|9|f/
if((k-i)>1) quickSort(data,i,k-1); 6x{<e4<n
if((j-k)>1) quickSort(data,k+1,j); Tz&Y]#h_
wy1X\PJjH
} ?gGt2O1J
/** yQS+P8x&|]
* @param data yWPIIWHx!
* @param i EER`?Sa(
* @param j S|AM9*k9
* @return "pxzntY|
*/ UsVMoX^
private int partition(int[] data, int l, int r,int pivot) { #eP
LOR&q
do{ 2B~wHv
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lkIn%=Z
SortUtil.swap(data,l,r); z5\;OLJS,
} `XTh1Z\
while(l SortUtil.swap(data,l,r); Upl6:xYrG
return l; |rRO@18dA
} fr6^nDY
_Yb_D/
} ~0"p*?^
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改进后的快速排序: q*jNH\|
c{ZY,C&<
package org.rut.util.algorithm.support; BI[JATZG
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import org.rut.util.algorithm.SortUtil; aAvsb$
4wzlJ19E(
/** Zx }&c |Q
* @author treeroot /h2b;"
* @since 2006-2-2 bte~c
* @version 1.0 !4"sX+z9
*/ fpyz'
public class ImprovedQuickSort implements SortUtil.Sort { XK(`mEi
qr\!*\9
private static int MAX_STACK_SIZE=4096; I<b?vR 'F
private static int THRESHOLD=10; VvbFp
/* (non-Javadoc) <<A`aU^fX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wx'Kp+9'
*/ +eX)48
public void sort(int[] data) { | aQ"3d
int[] stack=new int[MAX_STACK_SIZE]; EUYCcL'G
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int top=-1; Gm`}(;(A
int pivot; FUK3)lT
int pivotIndex,l,r; WnFG{S{s
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stack[++top]=0; gCd`pi
8
stack[++top]=data.length-1; Rx36?/
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while(top>0){ Q "r_!f
int j=stack[top--]; `?\tUO2_T
int i=stack[top--]; T Zir>5
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pivotIndex=(i+j)/2; 3
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pivot=data[pivotIndex]; 5M]z5}n/
ek aFN\
SortUtil.swap(data,pivotIndex,j); cR-~)UyrO
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file://partition `7aDEzmJ
l=i-1; y]..=z_ql
r=j; >C WKH~
do{ 5(2|tJw-H;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "bg'@:4F
SortUtil.swap(data,l,r); 3LR p2(A
} ;Lw{XqT
while(l SortUtil.swap(data,l,r); M_0zC1
SortUtil.swap(data,l,j); 1xNVdI
:R6bq!
if((l-i)>THRESHOLD){ ^_I} x)i*@
stack[++top]=i; bok.j
stack[++top]=l-1; <BWkUZz\P|
} pZZgIw}aS
if((j-l)>THRESHOLD){ LgmvKW|
stack[++top]=l+1; fa*Cpt:
stack[++top]=j; z9
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} D;GD<zC]
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} OkAK
file://new InsertSort().sort(data); iVtl72O
insertSort(data); 2s*#u<I
} ~pk(L[G
/** }y%`)lz~ ;
* @param data :H6FPV78
*/ HC {XX>F^
private void insertSort(int[] data) { +^aFs S
int temp; $VG*q
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <[aDo%,A
} qpoV]#iW
} %x;x_
} =M 6[URZ
z_;3H,z`
} ";[iZ
87!C@XlK_
归并排序: U8#xgz@
:qhpL-ER
package org.rut.util.algorithm.support; 4:3rc7_
1
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import org.rut.util.algorithm.SortUtil; foF19_2 ,
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/** %1
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* @author treeroot ?)Nj c&G
* @since 2006-2-2 djQv[Vc{
* @version 1.0 ]e:/"
*/ E! /[gZ
public class MergeSort implements SortUtil.Sort{ %OR|^M
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/* (non-Javadoc) idc`p?XP
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Jz8{` "
*/ aeyNdMk-
public void sort(int[] data) { D'<VYl"/
int[] temp=new int[data.length]; l@j.hTO<
mergeSort(data,temp,0,data.length-1); vgIpj3u
} %z]U LEYrZ
*YTo{~
private void mergeSort(int[] data,int[] temp,int l,int r){ +.B<Hd
int mid=(l+r)/2; 6\7ncFO3
if(l==r) return ; ))D:8l@
mergeSort(data,temp,l,mid); .D,p@4
mergeSort(data,temp,mid+1,r); g]@(E
for(int i=l;i<=r;i++){ iO/XhSD
temp=data; |LG4=j.l
} k;PAh>8
int i1=l; 2A`A\19t
int i2=mid+1; ^Jp&H\gI.
for(int cur=l;cur<=r;cur++){ (;x3} ]
if(i1==mid+1) <>eOC9;VY
data[cur]=temp[i2++]; KT|RF
else if(i2>r) mpC`Yk
data[cur]=temp[i1++]; Ok5<TZ6t4k
else if(temp[i1] data[cur]=temp[i1++];
@4d)R
else i!2TH~zl
data[cur]=temp[i2++]; oeSN9O
} qL6c`(0
} "@@I!RwA
^VW
PdH/Fe
} UrlM%Jnq1
S0h'50WteJ
改进后的归并排序: 'AGto'Yy;
bUV >^d
package org.rut.util.algorithm.support; ,)+o
_8fr6tO+
import org.rut.util.algorithm.SortUtil; A61^[Y,dX_
Mj-vgn&/
/** ,H}_%}10
* @author treeroot 5IOFSy`
* @since 2006-2-2 #?MY&hdU9
* @version 1.0 JTqDr
*/ 5*PYT=p}
public class ImprovedMergeSort implements SortUtil.Sort {
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c$S{^IQ
private static final int THRESHOLD = 10; .LVQx
Ng><n}
/* *b *G2f^
* (non-Javadoc) 682Z}"I0
* eg<bi@C1|
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) # ,uya2!)
*/ %98' @$:0
public void sort(int[] data) { <99M@ cF
int[] temp=new int[data.length]; ]Y6cwZOe
mergeSort(data,temp,0,data.length-1); -m'j]1
} ^2d!*W|
N#V.1<Y
private void mergeSort(int[] data, int[] temp, int l, int r) { m^' uipa\
int i, j, k; lN,/3\B
int mid = (l + r) / 2; 5Dp#u
if (l == r) =4uSFK_L
return; AIb2k
if ((mid - l) >= THRESHOLD) 1XG!$4DW
mergeSort(data, temp, l, mid); OJT1d-5p
else YzosZ! L!<
insertSort(data, l, mid - l + 1); dpQG[vXe
if ((r - mid) > THRESHOLD) { pu85'DV
mergeSort(data, temp, mid + 1, r); ERwHLA
else V^y^
;0I}[
insertSort(data, mid + 1, r - mid); =/<LSeLxH
T@}|zDC#
for (i = l; i <= mid; i++) { .)1_Ew
temp = data; hPq%Lc
} kdz=ltw
for (j = 1; j <= r - mid; j++) { -?]W*f
temp[r - j + 1] = data[j + mid]; #QCphhG
} 64Lx-avf
int a = temp[l]; R [H+qr
int b = temp[r]; Yw _+`,W
for (i = l, j = r, k = l; k <= r; k++) { !-s!f&_
if (a < b) { ,1'4o3
data[k] = temp[i++]; pZ`|iLNl-
a = temp; jF`BjxrG
} else { h%WE=\,Qp
data[k] = temp[j--]; umz;F
b = temp[j]; xw{-9k-~
} A5,t+8`aci
} -(#I3h;I
} EM>}0V
%h1N3\y9i(
/** y(R?
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* @param data YV=QF
J'
* @param l 2|\A7.
* @param i ld$i+6|
*/ =4GSg1Biy
private void insertSort(int[] data, int start, int len) { |6Gm:jV
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +q6ydb,
} '`'GK&)
} =b;>?dP
} /iG*)6*^k
} yH][(o=2
sNun+xsf^
堆排序: 'B+ ' (f
&d7Z6P'`G
package org.rut.util.algorithm.support; "CiTa>x
]weoTn:
import org.rut.util.algorithm.SortUtil; NvM*h%ChM
.ROznCe}
/** "#mBcQ;QLV
* @author treeroot S9HwIH\m
* @since 2006-2-2 }68i[v9Njk
* @version 1.0 Nn>'^KZNG
*/ w[P4&?2:
public class HeapSort implements SortUtil.Sort{ f#ri'&}c
:
0"~i^
/* (non-Javadoc) "~TA SX_?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M$f7sx
*/ O25lLNmO
public void sort(int[] data) { 8* Jw0mSw
MaxHeap h=new MaxHeap(); =4d (b ;
h.init(data); HF|oBX$_
for(int i=0;i h.remove(); w+1Gs
;
System.arraycopy(h.queue,1,data,0,data.length); @p\}p Y$T
} J>d.dq>r
O-)-YVU
private static class MaxHeap{ "
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0!v->Dk
void init(int[] data){ p~LrPWHSTP
this.queue=new int[data.length+1]; n~VD uKn9
for(int i=0;i queue[++size]=data; <nEi<iAY>U
fixUp(size); G
"P4-
} f6$b
s+oP
} OtFh,}E
zbJT&@z
private int size=0; iR"N13
\9-"M;R.d
private int[] queue; G:g69=x y
O|_h_I-2
public int get() { C]Q8:6b
return queue[1]; ^*fQX1h<
} vloF::1
.F+@B\A<
public void remove() { DBP9{ x$
SortUtil.swap(queue,1,size--); 8QMPY[{
fixDown(1); !ct4;.2
D
} I-OJVZ( V
file://fixdown a22XDes=
private void fixDown(int k) { 1;VHM'
int j; cX3l t5
while ((j = k << 1) <= size) { ws4cF
N9P?
if (j < size %26amp;%26amp; queue[j] j++; f 2l{^E#h
if (queue[k]>queue[j]) file://不用交换 G@j0rnn>B
break; hlt[\LP=$
SortUtil.swap(queue,j,k); [$[:"N_
k = j; *hcYGLx
r
} cu+FM
} [z7bixN
private void fixUp(int k) { ID/F
while (k > 1) { HV<Lf
6gE
int j = k >> 1; 1'?4m0W1
if (queue[j]>queue[k]) R:B^
break; _UuC,Pl3
SortUtil.swap(queue,j,k); `-LGU7~+
k = j; (Cqn6dWK
} :%IoM E
} irjP>3_e
m# =z7.XrX
} $ `7^+8vHV
7 [0L9\xm
} sJNFFOz
$ MC)}l
SortUtil: 5atYOep
)p*}e8L
package org.rut.util.algorithm; .1LCXW=
$8BPlqBIZ
import org.rut.util.algorithm.support.BubbleSort; i~r l o^
import org.rut.util.algorithm.support.HeapSort; z;y:9l
import org.rut.util.algorithm.support.ImprovedMergeSort; 3po:xMY
import org.rut.util.algorithm.support.ImprovedQuickSort; IsR!'%Pu
import org.rut.util.algorithm.support.InsertSort; 5eWwgA
import org.rut.util.algorithm.support.MergeSort; }l=xiAF
import org.rut.util.algorithm.support.QuickSort; XC+A_"w)
import org.rut.util.algorithm.support.SelectionSort; S{3nM<
import org.rut.util.algorithm.support.ShellSort; JfPD}w
-IV]U*4
/** ++E3]X|
* @author treeroot Z@r.pRr'
* @since 2006-2-2 6^DR0sO
* @version 1.0 $q 2D+_
*/ q:g2Zc'Y~W
public class SortUtil { M9f35
:
public final static int INSERT = 1; 0iJue&
public final static int BUBBLE = 2; |ZQ@fmvL/p
public final static int SELECTION = 3; aM;W$1h
public final static int SHELL = 4; ]LM-@G+Jz
public final static int QUICK = 5; 7x<i :x3
public final static int IMPROVED_QUICK = 6; jRatm.N
public final static int MERGE = 7; LW(6$hpPp
public final static int IMPROVED_MERGE = 8; bcupo:N
public final static int HEAP = 9; n93=8;&
9YBv|A
public static void sort(int[] data) { TjG4`:*y#m
sort(data, IMPROVED_QUICK); aFLO{t r`
} HJY2#lSha6
private static String[] name={ CJhL)0Cs
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 3)RsLI9
}; vY_-Ranj#.
[pM V?a[
private static Sort[] impl=new Sort[]{
a`0=AQ
new InsertSort(), KI+VXH}Y5{
new BubbleSort(), ,GgAsj: K
new SelectionSort(), MuSUKBhM
new ShellSort(), M
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new QuickSort(), E6 WA}_
new ImprovedQuickSort(), x|vqNZ\F
new MergeSort(), Z:_D0jG
new ImprovedMergeSort(), BGfzslK
new HeapSort() y8DhOlewQ
}; ZIF49`Y4TF
12+>5BA
public static String toString(int algorithm){ <'g:T(t
return name[algorithm-1]; ?C/Te)
} JwXT%op9RP
`[n("7,
public static void sort(int[] data, int algorithm) { %$DI^yS
impl[algorithm-1].sort(data); +[tP_%/r'^
} uyY|v$FM
&@3H%DP}Ql
public static interface Sort { |p-t%xDdr
public void sort(int[] data); C/-63O_
} [VWUqlNt>
M4W5f#C5Ee
public static void swap(int[] data, int i, int j) { Rx+p.
int temp = data; tzh1s
i
data = data[j]; [2Ud]l:6E
data[j] = temp; ;{[.Zu
} 9rA=pH%<>B
} 1u9LdkhnY