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。 O`| ri5d
插入排序: smNr%}_g
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package org.rut.util.algorithm.support; IT"jtV
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import org.rut.util.algorithm.SortUtil;
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/** Gj?q+-d!(5
* @author treeroot ]].21
* @since 2006-2-2 y->iv%
* @version 1.0 h Nwb.[
*/ %dQX d]
public class InsertSort implements SortUtil.Sort{ w,$1 7+]3
@
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/* (non-Javadoc) [HfFC3U
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G)`MoVH1
*/ #v<+G=r*O
public void sort(int[] data) { gr7_oJ:R
int temp; &0TheY;srf
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K!mgh7Dx
} ' ga2C\)
} 5sUnEHN
} =Ch#pLmH
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} '%4,!
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冒泡排序: _Fjv.VQ,
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package org.rut.util.algorithm.support; Q.yoxq
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import org.rut.util.algorithm.SortUtil; AJ}Q,E
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/** "/=xu|
* @author treeroot WBdb[N6\
* @since 2006-2-2 K}@:>;*9
* @version 1.0 pcG q
*/ l+,rc*-j0
public class BubbleSort implements SortUtil.Sort{ X35hLp8 M
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/* (non-Javadoc) [%y D,8
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )*B.y|b#
*/ r+crE %-
public void sort(int[] data) { #wfR$Cd
int temp; ;'kH<Iq
for(int i=0;i for(int j=data.length-1;j>i;j--){ d0d2QRX
if(data[j] SortUtil.swap(data,j,j-1); YVi]f2F%
} NgKNT}JDv
} %qhaVM$]
} MaM7u:kD#
} *,u{~(thR
n_j[hA
} wim}}^H
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选择排序: ^q$sCt}
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package org.rut.util.algorithm.support; c"r( l~fc
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import org.rut.util.algorithm.SortUtil; #kA+Yqy\)
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/** ]MyWB<9M
* @author treeroot [o6d]i!
* @since 2006-2-2 ~}fpe>M:
* @version 1.0 q.4DwY5 L
*/
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public class SelectionSort implements SortUtil.Sort { ,==lgM2V>
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/* qmGB~N|N
* (non-Javadoc) 9b>a<Z
* (msJ:SG
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &%<G2x$
*/ ZZUCwczI
public void sort(int[] data) { uWSG+
int temp; "cZ.86gG`:
for (int i = 0; i < data.length; i++) { *!r8HV/<
int lowIndex = i; <v?-$3YT
for (int j = data.length - 1; j > i; j--) { 8in8_/x
if (data[j] < data[lowIndex]) { r QF%;
lowIndex = j; H4U;~)i
} _kfApO)O
} q%l<Hw6{z
SortUtil.swap(data,i,lowIndex); a"EXR-+8
} MWB?V?qPSC
} {v(3[7
8@!SM
} ouujd~b+
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Shell排序: F -m1GG0s
e2>gQ p/
package org.rut.util.algorithm.support; 6xwC1V?:0t
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import org.rut.util.algorithm.SortUtil; 5we1q7
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/** \|kU{d0
* @author treeroot ry:tL0;;e#
* @since 2006-2-2 2ma.zI@^u9
* @version 1.0 zK}.Bhj#
*/ -7CkOZT
public class ShellSort implements SortUtil.Sort{ -<.>jX
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/* (non-Javadoc) RSy1 wp4W
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1'h?qv^(
*/ )<+Z,6
public void sort(int[] data) {
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for(int i=data.length/2;i>2;i/=2){ &}WSfZ0{
for(int j=0;j insertSort(data,j,i); *ood3M[M^
} vg<_U&N=-r
} qzq>C"z\Y$
insertSort(data,0,1); u >x2
} >%{h_5
3.soCyxmc
/** sf%=q$z
* @param data LGK}oL'
* @param j 'O
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* @param i U^.$k-|k
*/ Fik*7!XQ8
private void insertSort(int[] data, int start, int inc) { *fl1
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int temp; !JJY(o
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "p<f#s}
} wI)W:mUZZ
} *}FoeDe
} w\a\I
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} 7p{lDQ
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快速排序: :iq1-Pw
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package org.rut.util.algorithm.support; /#blXI
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import org.rut.util.algorithm.SortUtil; ?=6zgb"9-
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/** zdtzR<X
* @author treeroot {R(q7ALR
* @since 2006-2-2 @D%VV=N~[
* @version 1.0 6x_8m^+m
*/ F<oJ
public class QuickSort implements SortUtil.Sort{ 07n=H~yU
Uj_%U2S$
/* (non-Javadoc) gq/q]Fm\
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VPK)HzPG,
*/ ee6Zm+.B
public void sort(int[] data) { jQc$>M<"o
quickSort(data,0,data.length-1); @A
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} /|Zk$q.\
private void quickSort(int[] data,int i,int j){ H`kfI"u8
int pivotIndex=(i+j)/2; M>-x\[n+
file://swap yhZ 2-*pTg
SortUtil.swap(data,pivotIndex,j); I6\l6 o
6*CvRb&
int k=partition(data,i-1,j,data[j]); s3oK[:/
SortUtil.swap(data,k,j); !s5 _JO
if((k-i)>1) quickSort(data,i,k-1); :Z,zWk1|
if((j-k)>1) quickSort(data,k+1,j); 1--5ok
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21W>}I"0?
} @qI^xs=Z
/** hCM+=]z"
* @param data J-b
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* @param i %G>*Pez%
* @param j $33wK
* @return e_7a9:2e
*/ Ymx/N+Jl
private int partition(int[] data, int l, int r,int pivot) { *&!&Y*Jzg
do{ T2GJoJ!
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); U",kAQY
SortUtil.swap(data,l,r); GkVV%0;&J1
} CPAizS
while(l SortUtil.swap(data,l,r); t '* L,
return l; ^k/@y@%
} j&u{a[Y/}
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} (zte 'F4
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改进后的快速排序: ("ql//SL
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package org.rut.util.algorithm.support; ?$%#y u#.
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import org.rut.util.algorithm.SortUtil; Dhv ^}m@
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/** ~Cm_=[
* @author treeroot /U+0T>(HS
* @since 2006-2-2 K<6)SL4
* @version 1.0 0.qnbDw_
*/ ZDMS:w.'T
public class ImprovedQuickSort implements SortUtil.Sort { ;5MI8
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private static int MAX_STACK_SIZE=4096; AKu]c-
private static int THRESHOLD=10; *7FtEk/l
/* (non-Javadoc) Gu-6~^Km9
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h:[%' htz
*/ /5pVzv+rm
public void sort(int[] data) { wa2?%y_G
int[] stack=new int[MAX_STACK_SIZE]; !UDTNF?1
:;HJ3V;
int top=-1; t,Ss3
int pivot; `B-jwVrN(
int pivotIndex,l,r; "MOM@4\
]?M3X_Mq
stack[++top]=0; N6EG!*
stack[++top]=data.length-1; }}G`yfs}r
c>mTd{Abi
while(top>0){ f:bUM/Ud
int j=stack[top--]; 9=TjSRS
int i=stack[top--]; N"L@
9bwG3jn4?
pivotIndex=(i+j)/2; ?$J#jhR?
pivot=data[pivotIndex]; QbrR=[8b
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SortUtil.swap(data,pivotIndex,j); ,%6!8vX
{el[W,CT#
file://partition D?A3p6%
l=i-1; h6`v%7H?
r=j; ]O]6O%.ao
do{ +6-_9qRq
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1 UdET#\
SortUtil.swap(data,l,r); rrz^LD
} @kBy|5
while(l SortUtil.swap(data,l,r); ~)vq0]MRg
SortUtil.swap(data,l,j); @|N{EI
2Kwr=t
if((l-i)>THRESHOLD){ @` 5P^H7
stack[++top]=i; *QH~z2:[
stack[++top]=l-1; xU9T8Lw
} 5d|hP4fEc
if((j-l)>THRESHOLD){ fkk&pu
stack[++top]=l+1; 2:GS(%~
stack[++top]=j; t[}&*2"$/
} jJbS{1z
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} AO[/-Uij
file://new InsertSort().sort(data); =/kwUjC?
insertSort(data); S3Dmc\f
} h\-3Y U
/** 46[k9T
* @param data JIL(\d
*/
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private void insertSort(int[] data) { vX30Ijm
int temp; l\tg.O~
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yVfF
*nG
} vb.}SG>
} }-/oL+j
} 0(qtn9;=2
0fE?(0pBj
} !KC4[;Y
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归并排序: ++\s0A(e
Q{=DLm`
package org.rut.util.algorithm.support; tY@+d*u
jEMnre3/
import org.rut.util.algorithm.SortUtil; ;suY
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/** E\1e8Wyh
* @author treeroot 1 EL#T&
* @since 2006-2-2 4LXC;gZ
* @version 1.0 aO&!Y\=@
*/ yByxy-~
public class MergeSort implements SortUtil.Sort{ Mh"iyDGA
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/* (non-Javadoc) bUU\bc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) br;~}GR_h
*/ .C|dGE?,
public void sort(int[] data) { __%){j6
int[] temp=new int[data.length]; 3;?DKRIcX
mergeSort(data,temp,0,data.length-1); GahIR9_2
} >1BDt:G36
bt=z6*C>A
private void mergeSort(int[] data,int[] temp,int l,int r){ yRy^'E~
int mid=(l+r)/2; 4OOI$J$Jh
if(l==r) return ; ech1{v\B|
mergeSort(data,temp,l,mid); U{52bH<
mergeSort(data,temp,mid+1,r); AB+HyZ*//
for(int i=l;i<=r;i++){ \ lW*.<
temp=data; T-F8[dd^/
} :d1Kq _\K
int i1=l; Y>2oU`ly,
int i2=mid+1; QCJf
for(int cur=l;cur<=r;cur++){ h^v+d*R
N
if(i1==mid+1) E3V_qT8
data[cur]=temp[i2++]; 'i:S=E
F
else if(i2>r) f]NaQ!.
7
data[cur]=temp[i1++]; xey?.2K1A
else if(temp[i1] data[cur]=temp[i1++]; * `3+x
else Owz>g4l
r
data[cur]=temp[i2++]; |33_="
} ?>Bt|[p:s)
} ]|QA`5=$
O:j=L{,d^
} q|_Cj]{
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改进后的归并排序: +2#pP
&ox5eX(
package org.rut.util.algorithm.support; SoHw9FtS
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import org.rut.util.algorithm.SortUtil; ra
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/** t vp kc;
* @author treeroot 8vx#QU8E/
* @since 2006-2-2 xf3;:soC
* @version 1.0 F;ELsg
*/ Bq~?!~\?.
public class ImprovedMergeSort implements SortUtil.Sort { CqLAtS X7
!-Uq#Ea0/
private static final int THRESHOLD = 10; H2{&da@D5
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/* .Fx-$Yqy
* (non-Javadoc) ~.Er
* \iH\N/
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Sc48iDc
*/ ?
@- t.N
public void sort(int[] data) { ]Wn=Oc{F
int[] temp=new int[data.length]; 2,r jy|R`
mergeSort(data,temp,0,data.length-1); xJ^pqb
} %'MR;hQsd8
]RuH6d2d|
private void mergeSort(int[] data, int[] temp, int l, int r) { yK>s]65&
int i, j, k; >mMmc!u>G
int mid = (l + r) / 2; V9;O1
if (l == r) &4m;9<8\
return; MtG~O;?8
if ((mid - l) >= THRESHOLD) rsD?
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mergeSort(data, temp, l, mid); JqK-vvI
else }g"K\x:Z
insertSort(data, l, mid - l + 1); G(hzW%P
if ((r - mid) > THRESHOLD) ]#\/1!W
mergeSort(data, temp, mid + 1, r); 3J[ 5^
else Uc0Sb
insertSort(data, mid + 1, r - mid); ]GiDfYs7%
gmCB4MO
for (i = l; i <= mid; i++) { V4. }wz_Y
temp = data; \eCQL(_
} yHmNO*(
for (j = 1; j <= r - mid; j++) { `aM8L
temp[r - j + 1] = data[j + mid]; a;v;% rs
} Es&'c1$^s
int a = temp[l]; $yZ(ws
int b = temp[r]; Q oWjC
for (i = l, j = r, k = l; k <= r; k++) {
w/wU~~
if (a < b) { 4EFP*7X
data[k] = temp[i++]; O7xBMqMf
a = temp; xL|4'8
} else { "uU[I,h
data[k] = temp[j--]; q;<Q-jr&O
b = temp[j]; ~2}^
-,
} jO5Wemqf
} {%8=qJ3@
} E#`JH
*cc|(EM
/** 3&Fqd
* @param data pJ_>^i=
* @param l ]Czq
A c
* @param i vb2aj!8_?
*/ +zzS
private void insertSort(int[] data, int start, int len) { 8_uh2`+Bvb
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PF]Vt
} vW03nt86
} .KxE>lJbqM
} sX#7;,Ft7
} % ^&D,
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堆排序: D}K/5iU]a
lPn&,\9@~
package org.rut.util.algorithm.support; V5]:^=
`bEum3l\6]
import org.rut.util.algorithm.SortUtil; -P$E)5?^
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/** N0fXO
* @author treeroot 23gJD8i8
* @since 2006-2-2
?`Som_vKO
* @version 1.0 J.pe&1
*/ Bk8 '*O/)
public class HeapSort implements SortUtil.Sort{ ;/ao3Q
1a;&&!X
/* (non-Javadoc) zNQ|G1o
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wg5i#6y8w
*/ o/p'eY:)
public void sort(int[] data) { Lz;E/a}s
MaxHeap h=new MaxHeap(); "6P- 0CJ
h.init(data); x^JjoI2vf
for(int i=0;i h.remove(); }NETiJ"6
System.arraycopy(h.queue,1,data,0,data.length); 8A|i$#.&
} p>
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private static class MaxHeap{ &Qq4xn+J
dIDs~
void init(int[] data){ XrQS?D`
this.queue=new int[data.length+1]; :Qklbd[9qF
for(int i=0;i queue[++size]=data; (?pn2- Ip
fixUp(size); Y$6W~j
} O7\)C]A
} pI{s
)|"
e,Fe,5E&g
private int size=0; m#(ve1E
8v']>5S]#
private int[] queue; m7~[f7U
ti9cfv>
public int get() { !YEU<9
return queue[1]; G/C5o=cY
} $;t#pN/`
Ss{
public void remove() { {T[/B"QZG
SortUtil.swap(queue,1,size--); ;t}ux
fixDown(1); 7<%Rx19L*
}
LYX\#
file://fixdown 5s2334G
private void fixDown(int k) { \ |9KOulr
int j; Zx}.mt#}8
while ((j = k << 1) <= size) { hDs.4MZC`
if (j < size %26amp;%26amp; queue[j] j++; Rd.[8#7VE
if (queue[k]>queue[j]) file://不用交换 G0eJ<*|_ 3
break; Ig6>+Mw
SortUtil.swap(queue,j,k); mLn =SU{#
k = j; ()+;KF8
} ^NTOZ0x~#
} =xX\z\[A
private void fixUp(int k) { 6">jf #pE
while (k > 1) { 'zhw]L;'g
int j = k >> 1; 0yxMIX
if (queue[j]>queue[k]) id.W"5+
break; J8yi#A>+
SortUtil.swap(queue,j,k); Wy%F
k = j; D?_#6i;DJ
} g$*VA} s
} zorTZ #5
/< CjBW:
} ;{~F7:i
'3@WF2a
} 6'6@VB
/Iu._2
SortUtil: jq&$YmWp
L%.GKANM
package org.rut.util.algorithm; l@om2|B
y]`@%V2P
import org.rut.util.algorithm.support.BubbleSort; &xqr&(o
import org.rut.util.algorithm.support.HeapSort; B$ )6X
import org.rut.util.algorithm.support.ImprovedMergeSort; -zVa[&
import org.rut.util.algorithm.support.ImprovedQuickSort; [\&Mo]"0
import org.rut.util.algorithm.support.InsertSort; 0|:Ic,
import org.rut.util.algorithm.support.MergeSort; _r|$H_#
import org.rut.util.algorithm.support.QuickSort; M_4g%uHG
import org.rut.util.algorithm.support.SelectionSort; uOrvmb
import org.rut.util.algorithm.support.ShellSort; W+~ w
.SdEhW15)
/** 1W5\
* @author treeroot +mT}};-TS
* @since 2006-2-2 VPTT*a`
* @version 1.0 )Cz^Xp)#
*/ >cD+&h34
public class SortUtil { c])b?dJ*
public final static int INSERT = 1; 5Ffz^;i
public final static int BUBBLE = 2; Al`[Iu&
public final static int SELECTION = 3; 9Yowz]')
public final static int SHELL = 4; `8TM<az-L
public final static int QUICK = 5; gH0B[w ]
public final static int IMPROVED_QUICK = 6; %6"b<
MAO
public final static int MERGE = 7; puv*p%E
public final static int IMPROVED_MERGE = 8; ^F~e?^s
public final static int HEAP = 9; [,a O*7N
[lA[wCw
public static void sort(int[] data) { 8P!dk5,,O
sort(data, IMPROVED_QUICK); Sh]x`3 ).
} fwRlqfi
private static String[] name={ bhSpSul
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" z[S,hD\w
}; \wNn c"
t{>66jm\R
private static Sort[] impl=new Sort[]{ c+G: bb%p
new InsertSort(), _A)<"z0E
new BubbleSort(), XI\aZ\v
new SelectionSort(), Rhx7eU#&
new ShellSort(), BQBO]<99
new QuickSort(), h ;5
-X7
new ImprovedQuickSort(), +c\s%Gzrh
new MergeSort(), vd /_`l.D
new ImprovedMergeSort(), KX)xCR~
new HeapSort() 4W.;p"S2
}; %`}CbD6
uPV,-rm[F_
public static String toString(int algorithm){ $_Qo
return name[algorithm-1]; A0rdQmrOL
} Ytx+7OLe
ojVpw4y.
public static void sort(int[] data, int algorithm) { BPrA*u}T
impl[algorithm-1].sort(data); 6EK+] 0
} 6DJ,/J2F
:<&}/r
public static interface Sort { DcbL$9UI
public void sort(int[] data); Bw*z4qb{yH
} _T5~B"*
oJ8_hk<Va8
public static void swap(int[] data, int i, int j) { 2,&lGyV#
int temp = data; cJ8F#t
data = data[j]; fsjA7)/
data[j] = temp; d=qpTb;(
}
OV8b~k4=
} R/^JyL