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。 = VLS/\A
插入排序: Z BUArIC
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package org.rut.util.algorithm.support; 60=m
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import org.rut.util.algorithm.SortUtil; BElJB&I
/** 6&Juv
* @author treeroot Q^K "8 ;
* @since 2006-2-2 X;F?:Iw \
* @version 1.0 g42)7
*/ XNMa0
public class InsertSort implements SortUtil.Sort{ w6dFb6~R
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/* (non-Javadoc) IPSF]"}~
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vKwQXR~C
*/ W>(/ bX
public void sort(int[] data) { tj]9~eJ-
int temp; o'~5pS(wq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); U'UQ|%5f
} S_T^G` [
} ,h\s F#|
} . #Z+Z
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} ']-@?sD$
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冒泡排序: pu!d qF<
1pv}]&X
package org.rut.util.algorithm.support; ]{
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import org.rut.util.algorithm.SortUtil; b?4/#&z]
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/** o[ENp'r
* @author treeroot !}\4utHY
* @since 2006-2-2 ?.c;oS|
* @version 1.0 E+"dqSI/v
*/ < _$%@4 L
public class BubbleSort implements SortUtil.Sort{ DcIvhB p
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/* (non-Javadoc) nhSb~QqEh
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .,~(%#Wl$
*/ fl
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public void sort(int[] data) { `6y{.$ z
int temp; -S,ln
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6~#Ih)K
if(data[j] SortUtil.swap(data,j,j-1); E|YdcS
} 2,vB'CAI
} bi ozZ
} q'oMAM f}
}
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} ]Ni$.@Hu$
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选择排序: >vrxP8_
qj01]
package org.rut.util.algorithm.support; '^%~JyU
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import org.rut.util.algorithm.SortUtil; 4E8JT#&
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/** vN4Qdpdb
* @author treeroot o }Tz"bN
* @since 2006-2-2 Z'^U ad6
* @version 1.0 + SZYg[
*/ ^1:U'jIXO
public class SelectionSort implements SortUtil.Sort { 41#w|L
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/* ~,D@8tv
* (non-Javadoc) x?x`oirh
* FZd.L6q
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |o'Q62`%}
*/ VZ>On$hp
public void sort(int[] data) { O 2{)WWOT
int temp; W$JebW<z(
for (int i = 0; i < data.length; i++) { n}A\2bO
int lowIndex = i; a/~aFmu6b
for (int j = data.length - 1; j > i; j--) { nqR?l4 DX
if (data[j] < data[lowIndex]) { 7;.xc{
lowIndex = j; Bhqft;Nuh
} X.ONa_
} K\[!SXg@
SortUtil.swap(data,i,lowIndex); rdJm{<
} -B#yy]8
} d{et8N
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} d;tkJ2@NO
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Shell排序: tg4Y i|5
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package org.rut.util.algorithm.support; VS#wl|b8
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import org.rut.util.algorithm.SortUtil; B}OY/J/*8
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/** Uu6L~iB
* @author treeroot r#WT`pav
* @since 2006-2-2 n?#!VN3
* @version 1.0 Ot&:mT!2
*/ (VvKGh
public class ShellSort implements SortUtil.Sort{ 50jOA#l[
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/* (non-Javadoc) kI*(V[i
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xog/O i
*/ @#+jMV$g
public void sort(int[] data) { N;F)jO
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for(int i=data.length/2;i>2;i/=2){ zHB_{(o7
for(int j=0;j insertSort(data,j,i); >YW\~T
} F9c`({6k
} M"=n>;*X
insertSort(data,0,1); JL}\*
} ;N+$2w
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/** CozKyt/r7
* @param data O@8pC+#`Z
* @param j i< (s}wg
* @param i (J$\-a7<f
*/ '6Qy /R
private void insertSort(int[] data, int start, int inc) { pvWau1ArNq
int temp; )G^TW'9
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); u'Q?T7
} #$S}3
o
} !}TMiCK
} WiNT;v[
s}M= oe
} A )nW
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快速排序: !KS F3sz
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package org.rut.util.algorithm.support; ~yJ4qp-
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import org.rut.util.algorithm.SortUtil; .;/L2Jv
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/** r >{G`de4
* @author treeroot ?4t-caK^u
* @since 2006-2-2 `linG1mF
* @version 1.0 PY\PUMF>
*/ Lf}8qB#Y
public class QuickSort implements SortUtil.Sort{ /4S;QEv
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/* (non-Javadoc) 8Vl!|\x5
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9
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*/ Aw^yH+ae
public void sort(int[] data) { ,+/zH'U}
quickSort(data,0,data.length-1); n"{X!(RIcx
} dT@UK^\
private void quickSort(int[] data,int i,int j){ oT+(W,G
int pivotIndex=(i+j)/2; @98;VWY\
file://swap J07O:cjyu
SortUtil.swap(data,pivotIndex,j); <dR,'
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int k=partition(data,i-1,j,data[j]); 9G+f/k,P
SortUtil.swap(data,k,j); S0w> hr
if((k-i)>1) quickSort(data,i,k-1); _j#SpL'P
if((j-k)>1) quickSort(data,k+1,j); ^tAO_~4
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} gy_$#e
/** e$l6gY
* @param data =v-2@=NJ`K
* @param i a<Uqyilm
* @param j /lD?VE
* @return 66:ALFwd7
*/ -e`;bX_N)
private int partition(int[] data, int l, int r,int pivot) { 9BON.` |_
do{ B!,yfTk]
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); aO1IVESr$
SortUtil.swap(data,l,r); D!FaE N
} \ElX~$fS
while(l SortUtil.swap(data,l,r); ai ftlY
return l; |qUrEGjiSS
} >]$aoA#
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} E&2tBrAq
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改进后的快速排序: !Tfij(91
S ~|.&0"\
package org.rut.util.algorithm.support; 2w1tK
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import org.rut.util.algorithm.SortUtil; R{3CW^1
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/** m6n hC
* @author treeroot f'{>AKi=C
* @since 2006-2-2 pCt}66k}
* @version 1.0 1r4,XSk
*/ U"5q;9#q
public class ImprovedQuickSort implements SortUtil.Sort { 0=[0|`x
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private static int MAX_STACK_SIZE=4096; \iZ1W
private static int THRESHOLD=10; TETsg5#
/* (non-Javadoc) nFXAF!,jj
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rSyaZ6#
*/ q|{tQJfYg
public void sort(int[] data) { ;nk@XFJ
int[] stack=new int[MAX_STACK_SIZE]; .cR*P<3O
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int top=-1; ;BTJ%F.
int pivot; 3
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int pivotIndex,l,r; WEC-<fN|Y\
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stack[++top]=0; v MWC(m
stack[++top]=data.length-1; \Da~p9T&
@3 "DBJ
while(top>0){ MVAc8d S
int j=stack[top--]; % +8
int i=stack[top--]; 7SHo%bA
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pivotIndex=(i+j)/2; m|dF30~A
pivot=data[pivotIndex]; XI
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SortUtil.swap(data,pivotIndex,j); $K=z
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file://partition oZvG3_H4.
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r=j; mt .,4
do{ riEqW}{
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /O"0L/hc^
SortUtil.swap(data,l,r); H2]BMkum
} JOHp?3 "4
while(l SortUtil.swap(data,l,r); <w11nB)
SortUtil.swap(data,l,j); +}]wLM}\UF
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if((l-i)>THRESHOLD){ B#4S/d{/
stack[++top]=i; 4+,*sn
stack[++top]=l-1; 9;:7e*x]lc
} =z%s8D2
if((j-l)>THRESHOLD){ :\T_'Shq
stack[++top]=l+1; &@Yoj %%
stack[++top]=j; >,w P!;dh
} fa.f(c
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} .?7So3
file://new InsertSort().sort(data); ,XP@ pi
insertSort(data); {Bv`i8e
} rr6"Y&v
/** {kv4g\a;
* @param data ^:$j:w?j
*/ *xho
private void insertSort(int[] data) { <#!8?o&i
int temp; c{ZqQtfM
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); n/:Z{
}
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} 9Z}S]-u/
} ol1AD: Ho
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} $jDD0<F.#
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归并排序: E ,Dlaq
<kk'v'GW@
package org.rut.util.algorithm.support; >4Fdxa
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import org.rut.util.algorithm.SortUtil; W'8J<VBD
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/** SlM>";C\
* @author treeroot | H5Ync[s
* @since 2006-2-2 _LLW{^V
* @version 1.0 ',<{X(#(
*/ Cf.WO %?P
public class MergeSort implements SortUtil.Sort{ 4{uJ||!
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/* (non-Javadoc) \Gv- sA
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qsQ]M^@>
*/ Hd96[Uo
public void sort(int[] data) { GXGN;,7EV
int[] temp=new int[data.length]; HE4`9$kVLr
mergeSort(data,temp,0,data.length-1); zV9
=
} ||bA
V/+H_=|
private void mergeSort(int[] data,int[] temp,int l,int r){ &n,xGIG
int mid=(l+r)/2; |Sy}d[VKsZ
if(l==r) return ; C8O7i[uc
mergeSort(data,temp,l,mid); bUpmU/RW
mergeSort(data,temp,mid+1,r); KI^ q 5D ?
for(int i=l;i<=r;i++){ \f~u85
temp=data; i&?
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} G=+!d&mbg
int i1=l; pRb+'v&_k
int i2=mid+1; )L&n)w
for(int cur=l;cur<=r;cur++){ (Qw`%B
if(i1==mid+1) [0(
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data[cur]=temp[i2++]; je$R\7B<
else if(i2>r) c=uBT K*
data[cur]=temp[i1++]; d7n4zx1Hh
else if(temp[i1] data[cur]=temp[i1++]; @8}-0c
else g%KGF)+H
data[cur]=temp[i2++]; S.?\>iH[
} Iltg0`
} Oa3=+_C~$1
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} ?3KR(6D
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改进后的归并排序: e{#a{`?Uez
519:yt
package org.rut.util.algorithm.support; fTi{oY,zTg
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import org.rut.util.algorithm.SortUtil; <LOx.}fv
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/** {O3oUE+
* @author treeroot 6#lC(ko'
* @since 2006-2-2 Q'%5"&XFD
* @version 1.0 ,EGD8$RA]
*/ FsPDWy&x
public class ImprovedMergeSort implements SortUtil.Sort { ?GD?J(S
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private static final int THRESHOLD = 10; 8UY=}R2C
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/* kI[O {<kQ
* (non-Javadoc) }.|5S+J?[
* m-KK
{{
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i,b7Ft:F&
*/ q?]@' ^:;
public void sort(int[] data) { f/WM}Hpj
int[] temp=new int[data.length]; 5\kZgXWIh
mergeSort(data,temp,0,data.length-1); s2v#evI`+
} Kac j
a):Run
private void mergeSort(int[] data, int[] temp, int l, int r) { ,m'#>d&zO
int i, j, k; zam0(^=
int mid = (l + r) / 2; :AcNb
if (l == r) /$.vHt5nt
return; \t(r@qq
if ((mid - l) >= THRESHOLD) hv8[_p`>
mergeSort(data, temp, l, mid); {$TB#=G
else .yh2ttf<gB
insertSort(data, l, mid - l + 1); }br<2?y,
if ((r - mid) > THRESHOLD) 88=FPEU
mergeSort(data, temp, mid + 1, r); cyP*QW[
else yc4f\0B/
insertSort(data, mid + 1, r - mid); h/bYtE
gsq[ 9
for (i = l; i <= mid; i++) { h
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temp = data; y!c7y]9__2
} a1sLRqo8
for (j = 1; j <= r - mid; j++) { ]}L1W`n
temp[r - j + 1] = data[j + mid]; Tvw2py q
} Dt'e<d Is
int a = temp[l]; mb`}sTU).
int b = temp[r]; `ip69 IF2*
for (i = l, j = r, k = l; k <= r; k++) { kQ'xs%Fw
if (a < b) { R/xCS.yl}
data[k] = temp[i++]; 19{?w6G<k
a = temp; Wv/5#_
} else { e[&3K<
data[k] = temp[j--]; G.ARu-2's
b = temp[j]; X.Y)'qSf
} `rJ ~*7-
} He;%6OG{
} R:m=HS_
Guc^gq}
/** v")
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* @param data >ZsK5v
* @param l /[dAgxL
* @param i DOU?e9I2
*/ 19`0)pzZ*P
private void insertSort(int[] data, int start, int len) { rX}==`#\
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vrx3O
} ?|YQtY
}
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} ;| ,Y2?
} 4c@F.I
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堆排序: TL:RB)- <
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package org.rut.util.algorithm.support; *heQ@ww
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import org.rut.util.algorithm.SortUtil; H hH'\-[t
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/** qiJ{X{lI
* @author treeroot %=eD)p7l-
* @since 2006-2-2 HjR<4;2
* @version 1.0 M_I\:Q
*/ >9|+F[Fc
public class HeapSort implements SortUtil.Sort{ 9DKB+K.1
8}@a?QS(&
/* (non-Javadoc) J/2pS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e 3oIoj4o
*/ "S#hzrEdYI
public void sort(int[] data) { {u3u%^E;R
MaxHeap h=new MaxHeap(); +=$G6uR$
h.init(data); e|y~q0Q$
for(int i=0;i h.remove(); #oY7v,x\
System.arraycopy(h.queue,1,data,0,data.length); 1Xc%%j
} 'J$NW
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private static class MaxHeap{ bc-}Qn
n_glYSV!
void init(int[] data){ m!(K
this.queue=new int[data.length+1]; 0[Aa2H*
for(int i=0;i queue[++size]=data; vj0?b/5m
fixUp(size); inrL'z
} ]uf_"D
} j]^]p;An
[%:NR
private int size=0; Ccmbdw,Z5
=h{2!Ah7
X
private int[] queue; dGjvSK<1@
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public int get() { qsx1:Ny1
return queue[1]; yD"sYT
} RR|Eqm3)
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public void remove() { o}z}79Z
SortUtil.swap(queue,1,size--); ]W,g>91m
fixDown(1); Fy^\U w
} xm5D$m3#
file://fixdown &-A7%"
private void fixDown(int k) { Z(P#]jI]
int j; P@#6.Bb#V
while ((j = k << 1) <= size) { xB#E&}Ho
if (j < size %26amp;%26amp; queue[j] j++; ^y,ip=<5\3
if (queue[k]>queue[j]) file://不用交换 Mv3Ch'X[
break; \8!HZei
SortUtil.swap(queue,j,k); >Ko )Z&j9W
k = j; D~} 4N1
} sh1fz 6g
} |%} ?*|-
private void fixUp(int k) { L~~aW0,
while (k > 1) { PhQD}|S
int j = k >> 1; Yu=^`I
if (queue[j]>queue[k]) TH-^tw
break; $O#h4L_
SortUtil.swap(queue,j,k); {)M4h?.2
k = j; Velmq'n
} '"EOLr\Z,
} /zWWUl`:
KME
#5=~
} iX28+weH
{BF\G%v;+
} {SJLM0=Z
m:t$&
SortUtil: ?cJ$=
fjb2-K
package org.rut.util.algorithm; M\%{!Wzo8
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import org.rut.util.algorithm.support.BubbleSort; &P;x<7h$t?
import org.rut.util.algorithm.support.HeapSort; ra3WLK
import org.rut.util.algorithm.support.ImprovedMergeSort; qrdI"
import org.rut.util.algorithm.support.ImprovedQuickSort; gDv]n^&