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。 aRn""3[
插入排序: ]CU)#X<J
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package org.rut.util.algorithm.support; {<Y!'WL{
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import org.rut.util.algorithm.SortUtil; WT,dTn;W
/** J7EWaXGbz
* @author treeroot .VmRk9Z
* @since 2006-2-2 P?8$VAkj
* @version 1.0 f@Ve,i
*/ Q0ezeo
public class InsertSort implements SortUtil.Sort{ ?u{Mz9:?HT
PK{FQ3b2{
/* (non-Javadoc) ) P+<=8@a
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #MMp0
*/ 1!+0]_8K
public void sort(int[] data) { 3$_- 0>
int temp; #w^Ot*{!N
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *r~6R
} "Rf|o6!d
} -4J.YF>
} u1z!OofN>
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} Mac :E__G
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冒泡排序: eXLdb-
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package org.rut.util.algorithm.support; 5Tidb$L;Du
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import org.rut.util.algorithm.SortUtil; H\<PGC"_Y
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/** u!VrMH
* @author treeroot 3][
* @since 2006-2-2 I[06R
* @version 1.0 2of+KI:
*/ ^}z:FI
public class BubbleSort implements SortUtil.Sort{ /Vv)00
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/* (non-Javadoc) sG|,#XQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gV5mERKs
*/ O15~\8#'
public void sort(int[] data) { &MONg=s3
int temp; 1iM(13jW
for(int i=0;i for(int j=data.length-1;j>i;j--){ d-8g
if(data[j] SortUtil.swap(data,j,j-1); $iH
} 5VN~?#K
} NfCo)C-t
} ypA 9WF
} WUx2CK2N
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} h9. Yux
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选择排序: W3MH8z
sY}0PB
package org.rut.util.algorithm.support; 7Z81+I|&8
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import org.rut.util.algorithm.SortUtil; |;C;d"JC2
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/** _ UF'Cf+Y
* @author treeroot kRiZ6mn
* @since 2006-2-2 Ao9|t;i
* @version 1.0 2m&?t_W
*/ /w*HxtwFmD
public class SelectionSort implements SortUtil.Sort { @]],H0
M!PK3
/* H Mfhe[A?
* (non-Javadoc) HN&]`cr;
* o107. s
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $A: ?o?"7}
*/ $fW8S8
public void sort(int[] data) { 1!ijRr
int temp; .m%ygoO
for (int i = 0; i < data.length; i++) { c
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int lowIndex = i; 0gKSjTqo
for (int j = data.length - 1; j > i; j--) { Xu{S4#1
if (data[j] < data[lowIndex]) { yyjgPbLN=
lowIndex = j; 61z^(F$@
} Wb{8WPS
} **n109R
SortUtil.swap(data,i,lowIndex); 1lv.@-
} lIatM@gU
} 8{Wh4~|+
niCq`!
} sQ82(N7l
4}^\&K&t{
Shell排序: # 9ZO1\
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package org.rut.util.algorithm.support; -s:NF;"
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import org.rut.util.algorithm.SortUtil; /.1h_[K]
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/** {y>Kcfc/?E
* @author treeroot I9jzR~T
* @since 2006-2-2 p-%m/d?
* @version 1.0 uo^tND4a;j
*/ !ma'*X
public class ShellSort implements SortUtil.Sort{ ]~m2#g%
Ktf lbI!
/* (non-Javadoc) Ni61o?]Nj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mk?F+gh
*/ EnjSio0
public void sort(int[] data) { </h}2x
for(int i=data.length/2;i>2;i/=2){ z
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for(int j=0;j insertSort(data,j,i); .\AbE*lZ#
} &qeMYYY
} ;c>IM]
insertSort(data,0,1); v6KF0mqA&
} *5S~@
nx`I9j\
/** -(![xZ1{K
* @param data kM @heFJb.
* @param j ^WIGd"^
* @param i JVNp= ikK
*/ B#x.4~YX
private void insertSort(int[] data, int start, int inc) { }tH6E
int temp; _WHGd&u
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); g h&,U`
} :+}Eo9
} C?VNkBJ>\
} d}]jw4
*Q2}Qbu
} Ceak8#|4
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快速排序: =(>pv,
p3{ 3[fDx
package org.rut.util.algorithm.support; mA']*)L1
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import org.rut.util.algorithm.SortUtil; p EbyQ[
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/** .t|B6n!
* @author treeroot VpmD1YSn
* @since 2006-2-2 G>c:+`KS
* @version 1.0 CN<EgNt1kN
*/ i@#fyU)[G
public class QuickSort implements SortUtil.Sort{ $"]*,=-X
<Yy|.=6 D
/* (non-Javadoc) y j C@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :/'oh]T|
*/ \#)w$O
public void sort(int[] data) { Oi4tG&q
quickSort(data,0,data.length-1); 5IiZnGu
} 6.gk6
private void quickSort(int[] data,int i,int j){ :B]yreg
int pivotIndex=(i+j)/2; *4|]=yPU
file://swap @t?uhT*Z=
SortUtil.swap(data,pivotIndex,j); O0,=@nw8.
|4|j5<5
int k=partition(data,i-1,j,data[j]); I Z{DR
SortUtil.swap(data,k,j); l^E)XWd
if((k-i)>1) quickSort(data,i,k-1); c0u1L@tj
if((j-k)>1) quickSort(data,k+1,j); YB'BAX<lI
xnD"LK
} :f5"w+
/** [}t^+^/
* @param data "Z*u2_ H
* @param i /p_#8}Uh
* @param j E*X-f"
* @return ^26}j uQ
*/ t bEJyA
private int partition(int[] data, int l, int r,int pivot) { %6@->c{
do{ JP*VR=0k?
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r5S5;jL%t
SortUtil.swap(data,l,r); Z1ZjQt#~+
} /32x|Ow# 1
while(l SortUtil.swap(data,l,r); Sn!5/9Y
return l; |KLCO'x
} sW]fPa(cn,
&pZncm
} RYuR&0_{
d/Y#oVI
改进后的快速排序: wmnh7'|0u
A
2Rp
package org.rut.util.algorithm.support; X(*MHBd
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import org.rut.util.algorithm.SortUtil; 6@;
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/** ;_Z[' %
* @author treeroot
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* @since 2006-2-2 c}r"O8M
* @version 1.0 ;o-c.-!F
*/ 5isqBu
public class ImprovedQuickSort implements SortUtil.Sort { T.?}iz=ZEq
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private static int MAX_STACK_SIZE=4096; KoKd.%
private static int THRESHOLD=10; G=l-S\0@
/* (non-Javadoc) YecV+K'p:
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XlDN)b5v{
*/ `4kVe= {
public void sort(int[] data) { GP{$w_'!J0
int[] stack=new int[MAX_STACK_SIZE]; {IA3`y~
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int top=-1;
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int pivot; e'0BP,\f_}
int pivotIndex,l,r; Uon^z?0A
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stack[++top]=0; -b$m<\0*
stack[++top]=data.length-1; 4(D/~OG-6
rK} =<R
while(top>0){ "';K$&,[
int j=stack[top--]; *~SanL\
int i=stack[top--]; SA[wFc
iw\yVd^]:k
pivotIndex=(i+j)/2; ^M6R l0
pivot=data[pivotIndex]; I )wc&>Lc
f'?FYBL
SortUtil.swap(data,pivotIndex,j); *9O@DF&*6
<b#1L
file://partition
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l=i-1; L| K8
r=j; zW9/[Db
do{ {DWL 5V#M
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); [Lal_}m?
SortUtil.swap(data,l,r); RBOg;EJ
} iV2v<ap.n
while(l SortUtil.swap(data,l,r); !\Vc#dslt
SortUtil.swap(data,l,j); (utk)
g?E8zf `
if((l-i)>THRESHOLD){ Q"F" 13
stack[++top]=i; 8]j*z n?,
stack[++top]=l-1; L-eO_tTh0
} <@H`5[R
if((j-l)>THRESHOLD){ _2
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stack[++top]=l+1; SS*3Qx:[
stack[++top]=j;
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} @<`P-+m
#G!\MYfQt
} @|'$k{i
file://new InsertSort().sort(data); DA_}pS"
insertSort(data); wU(!fw\
} b>]k=zd
/** ^ DCBL&I
* @param data /^hc8X
*/ Aa4 DJ
private void insertSort(int[] data) { ~`X$bF
int temp; g$h`.Fk,
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZgA+$}U)uW
} .oH)eD
} i[/`9 AK
} z07Xj%zX9
i62GZeE
} *3\ Nj6
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归并排序: w:aV2
Z;~ 7L*|
package org.rut.util.algorithm.support; S\L^ZH?[2
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import org.rut.util.algorithm.SortUtil; #5%ipWPHb
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/** U%)-_
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* @author treeroot =*{Ii]D
* @since 2006-2-2 ~@mNR^W-W
* @version 1.0 1+9!W
*/ d.$0X/0
public class MergeSort implements SortUtil.Sort{ Q8D#kAYw
oy\U\#k
/* (non-Javadoc) {PKf]m
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rT_J6F5J
*/ M$s9
public void sort(int[] data) { EGVS8YP>h
int[] temp=new int[data.length]; LK+67Y{25
mergeSort(data,temp,0,data.length-1); P&IS$FC.\
} IoZ_zz0
~s*kuj'%+
private void mergeSort(int[] data,int[] temp,int l,int r){ &}r-C97
int mid=(l+r)/2; qs{wrem
if(l==r) return ; d<RJH
mergeSort(data,temp,l,mid); 9#E)H?`g
mergeSort(data,temp,mid+1,r); GIhX2EvAS
for(int i=l;i<=r;i++){ 4*'ZabDD
temp=data; W.BX6
} K-[;w$np0
int i1=l; qSt\ 6~
int i2=mid+1; vj9'5]!~q
for(int cur=l;cur<=r;cur++){ U".5x~UC
if(i1==mid+1) f7/M _sx
data[cur]=temp[i2++]; :. u2^*<
else if(i2>r) zX]l$Q+
data[cur]=temp[i1++]; <%.lPO]&E
else if(temp[i1] data[cur]=temp[i1++]; _Kbj?j
else De2$:?
data[cur]=temp[i2++]; yz"hU
} /ke[nr
} kD(#LM<9s
f>|Wd;7l:
} "B>8on8O
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改进后的归并排序: jq%}=-%KE
<G'M/IR a
package org.rut.util.algorithm.support; a"l\_D'.K8
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import org.rut.util.algorithm.SortUtil; dQ_hlx!J
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/** 9N<=,!;5~s
* @author treeroot U>sEFzBup
* @since 2006-2-2 v#EFklOP
* @version 1.0 I^HwXp([
*/ #lO ^PK
public class ImprovedMergeSort implements SortUtil.Sort { T;]Ob3(BpW
9Y@ eXP
private static final int THRESHOLD = 10; vqZBDQ0
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/* zI\+]U'
* (non-Javadoc) jYvl-2A'
* upZtVdd
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 10)RLh|+
*/ ZtmaV27s/
public void sort(int[] data) { L6#4A3yh
int[] temp=new int[data.length]; nSRNd
A
mergeSort(data,temp,0,data.length-1); 7dv!
} B3pjli
pRzL}-[/v
private void mergeSort(int[] data, int[] temp, int l, int r) { )%PMDG|
int i, j, k; hiEYIx
int mid = (l + r) / 2; 1wm`a
if (l == r) Y`(~eNX^%
return; X%iJPJLza
if ((mid - l) >= THRESHOLD) Eg8b|!-')8
mergeSort(data, temp, l, mid); IRueq @4
else |sY
insertSort(data, l, mid - l + 1); D/JSIDd
if ((r - mid) > THRESHOLD) }+Q4s]
mergeSort(data, temp, mid + 1, r); b^&azUkMN
else bWSc&/9y
insertSort(data, mid + 1, r - mid); |28'<BL
;xiwyfqgE
for (i = l; i <= mid; i++) { axDa&7%
temp = data; >rJ**y
} cGR) $:
for (j = 1; j <= r - mid; j++) { <*WGvCh%w
temp[r - j + 1] = data[j + mid]; 3fA+{Y8S
} X6T[+]Gc
int a = temp[l]; W#E(?M[r
int b = temp[r]; h"/'H)G7_&
for (i = l, j = r, k = l; k <= r; k++) {
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if (a < b) { Xs# _AX
data[k] = temp[i++]; >{9VXSc
a = temp; J@"UFL'^
} else { ,RM8D)m\
data[k] = temp[j--]; \I-e{'h
b = temp[j]; G.^)5!By
} QqRF?%7q"q
} cTS.yN({G
} \#WWJh"W
jvAjnh#
/** ;]b4O4C\
* @param data TLp2a<Iy
* @param l a
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* @param i Sc#3<nVg
*/ @}:E{J#g
private void insertSort(int[] data, int start, int len) { ?qi~8.<w
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K~2sX>l
} j*[P\Cm
} /zb/am1#
} (z.n9lkfi
} ZNM9@;7
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堆排序: TET=>6
lM}-'8tt?
package org.rut.util.algorithm.support;
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import org.rut.util.algorithm.SortUtil; /CMgWGI
09trFj$L
/** 7(uz*~Z?`0
* @author treeroot :CK`v6 Qs
* @since 2006-2-2 DB65vM
* @version 1.0 ,|3_@tUl
*/ +RJKJ:W
public class HeapSort implements SortUtil.Sort{ WJu(,zM?G
>j3':>\U
/* (non-Javadoc) 7}y@VO6]
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6wj o:I
*/ 9(OeH7
public void sort(int[] data) { d(TN(6g@
MaxHeap h=new MaxHeap(); ]jC{o,?s
h.init(data); h# KSKKNW
for(int i=0;i h.remove(); bmK
System.arraycopy(h.queue,1,data,0,data.length); 1#%H!GKvTU
} ot[ZFF\
|59)6/i
private static class MaxHeap{ |JF,n~n
*4NY"EwjN
void init(int[] data){ gzn:]Y^
this.queue=new int[data.length+1]; D)?%kNeA
for(int i=0;i queue[++size]=data; jf`w8*R
fixUp(size); fP5i3[T
} 5>+@.hPX
} TfT^.p*
r~YBj>}
private int size=0; }$ySZa9
.r{t&HO;Y
private int[] queue; M2p|&Z%
)[J!{$&y
public int get() { ~tyqvHC
return queue[1]; 9#:fQ!3`
} c0o Z7)*}
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public void remove() { R9 Ab.t
SortUtil.swap(queue,1,size--); ]Idwy|eG
fixDown(1); \8!CKnfs
}
{U$XHG
file://fixdown R]e&JoY
private void fixDown(int k) { Z37Dv;&ZD
int j; dor1(@no|
while ((j = k << 1) <= size) { |LZ{kD|
if (j < size %26amp;%26amp; queue[j] j++; G+Z ,ic
if (queue[k]>queue[j]) file://不用交换 ,Yx<"2 W
break; #b;k+<n[X
SortUtil.swap(queue,j,k); mRRZ/m?A(
k = j; E;{CoL
} E:B"!Y6
} vs[!B-
private void fixUp(int k) { !j`<iPI7B
while (k > 1) { u"V,/1++\
int j = k >> 1; q[W6I9
if (queue[j]>queue[k]) Khi;2{`
break; 6E
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SortUtil.swap(queue,j,k); 5,##p"O(
k = j; -dO8Uis$
} q4w]9b/
} p+|8(w9A${
Z!~_#_Ugl
} ;$zvm`|:
.Z'NH
wCy
} \wsVO"/
2wB*c9~
SortUtil: %L-qAI&V
p7-\a1P3
package org.rut.util.algorithm; FXDB> }8
hZ452W
import org.rut.util.algorithm.support.BubbleSort; K$,<<hl
import org.rut.util.algorithm.support.HeapSort; mz%l4w?'
import org.rut.util.algorithm.support.ImprovedMergeSort; }q]*aADe
import org.rut.util.algorithm.support.ImprovedQuickSort; }A@:JR+|
import org.rut.util.algorithm.support.InsertSort; W)bSLD
import org.rut.util.algorithm.support.MergeSort; j3;W-c`5
import org.rut.util.algorithm.support.QuickSort; &U?4e'N)T
import org.rut.util.algorithm.support.SelectionSort; Z8FgxR
import org.rut.util.algorithm.support.ShellSort; <!FcQVH+L
>A X_"Q~
/** ZCj1Cz]"l<
* @author treeroot SyI~iW#Y1
* @since 2006-2-2 9v`sSTlSd
* @version 1.0 Q"~%T@e
*/ oF>`>
public class SortUtil { O2ktqAWx@
public final static int INSERT = 1; HM0&%
public final static int BUBBLE = 2; Q"u2<
public final static int SELECTION = 3; yOQae m^O
public final static int SHELL = 4; n@ba>m4{
public final static int QUICK = 5; F7O*%y.';
public final static int IMPROVED_QUICK = 6; FCEmg0qdjD
public final static int MERGE = 7; LH_H
yP_
public final static int IMPROVED_MERGE = 8; r'#!w3*Cy
public final static int HEAP = 9; /"st
sF
rZpsC}C'
public static void sort(int[] data) { }=R0AKz!Cv
sort(data, IMPROVED_QUICK); Mz(?_7
} n.8870.BW
private static String[] name={ f!yl&ulKU
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ~K #92
}; )#M$ov
G\MeJSt*
private static Sort[] impl=new Sort[]{ //|B?4kk
new InsertSort(), \
[OB.
new BubbleSort(), lMu9Dp
new SelectionSort(), ~<<32t'S:
new ShellSort(), N atC}k
new QuickSort(), 4(P<'FK $
new ImprovedQuickSort(), ~A5NseWCK
new MergeSort(), 1)h<)
new ImprovedMergeSort(), z(Uz<*h8
new HeapSort() /cx'(AT
}; nTo?~=b
`3ha~+Goo!
public static String toString(int algorithm){ AEnkx!o
return name[algorithm-1]; ]!sCWR
} u(8{5"C
;}f {o^ ]'
public static void sort(int[] data, int algorithm) { 7K.],eo0
impl[algorithm-1].sort(data); h>*3i#
} Hs8JJGXWB
mD% qDKI
public static interface Sort { H'udxPF
public void sort(int[] data); >f Hu
} --"5yGOL
P3W3+pwq
public static void swap(int[] data, int i, int j) { 6(7{|iY
int temp = data; &L?]w=*
data = data[j]; J5jI/P
data[j] = temp; Tf!6N<dRXR
} cE`qfz
} eQ)*jeD