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。 6,aH[>W
插入排序: Xv|=RNz
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package org.rut.util.algorithm.support; fEX=csZ86
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import org.rut.util.algorithm.SortUtil; ocFk#FW
/** %/"n(?$W
* @author treeroot Aeb(b+=
* @since 2006-2-2 ~/]]H;;^u
* @version 1.0 #3QPcoxa
*/ qD4]7"9
public class InsertSort implements SortUtil.Sort{ S0)JIrrHC
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/* (non-Javadoc) Y.\x.Hg
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $[A\i<#
*/ tqZ+2c<W3
public void sort(int[] data) { NS~;{d\
int temp; DK\XC%~m
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); \xj;{xc
} +yp:douERi
} :-B+W9'5
} d=PX}o^
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} jYFJk&c
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冒泡排序: !Aw^X} C
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package org.rut.util.algorithm.support; D &"D[|@
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import org.rut.util.algorithm.SortUtil; %bAQ>E2;m
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/** eF,F<IJT{
* @author treeroot MLu!8dgI
* @since 2006-2-2 d_,5;M^k
* @version 1.0 ];OvV ,*
*/ gvA}s/
public class BubbleSort implements SortUtil.Sort{ Dz(\ ?
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/* (non-Javadoc) y|2<Vc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x,!Dd
*/ (?fU l$q\
public void sort(int[] data) { sD:o
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int temp; @ph!3<(In,
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?T/]w-q>
if(data[j] SortUtil.swap(data,j,j-1); z3jkxWAZ
} 6^ wI^`NI
} X0VSa{
} U!aM63F3
} V4n~Z+k
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} H#~gx_^U
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选择排序: L"qJZU
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package org.rut.util.algorithm.support; "bm|p/A
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import org.rut.util.algorithm.SortUtil; BDB*>y7(
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/** *an Ng<@
* @author treeroot >fH0>W+!
* @since 2006-2-2 Vr1}Zv3K'
* @version 1.0 6ZqU:^3
*/ |9#q7kM
public class SelectionSort implements SortUtil.Sort { {A/r)
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/* l 88=
* (non-Javadoc) 2R[v*i^S
* a!9'yc
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b=,BLe\
*/ C/e.BXA
public void sort(int[] data) { gV2vwe
int temp; J~m$7T3Af
for (int i = 0; i < data.length; i++) { b/M/)o!C
int lowIndex = i; r5}p .
for (int j = data.length - 1; j > i; j--) { um.ZAS_kmc
if (data[j] < data[lowIndex]) { D&G6^ME
lowIndex = j; .a.HaBBV
} rH3U;K!
} P`biHs8O
SortUtil.swap(data,i,lowIndex); *;fTiL
} i#[8I-OtN/
} L4>14D\
q)?%END
} ?UtKu
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Shell排序: >)kKP8l7
V<QpC5
package org.rut.util.algorithm.support; b^/u9
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import org.rut.util.algorithm.SortUtil; y, l[v39
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/** Kh]es,$D
* @author treeroot #a e@VedM
* @since 2006-2-2 q+?&w'8
* @version 1.0 a*P v^Np-v
*/ >C0B!MT?3%
public class ShellSort implements SortUtil.Sort{ 16iTE-J_
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/* (non-Javadoc) *k{Llq
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y%TqH\RKv
*/ Kxsd@^E
public void sort(int[] data) { zg2d}"dV
for(int i=data.length/2;i>2;i/=2){ aTvyzr1
for(int j=0;j insertSort(data,j,i); C'JI%HnQ
} TO6F
} U,WOP7z
insertSort(data,0,1); 8<VDp Y
} 7{#p'.nc5
@]Jq28
/** q8{Bx03m6
* @param data imM!Me 0TE
* @param j Z",0 $Gxu
* @param i .I`>F/Sjr
*/ +^AdD8U
private void insertSort(int[] data, int start, int inc) { E{,WpU
int temp; 2*cNd}qr
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); >ywl()4O
} 8{>|%M
} T9yI%;D
} )G2Bx+Z;L
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} b `P6Ox3
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快速排序: !X}+JeU'
H:G``Vq;0m
package org.rut.util.algorithm.support; #un'?]tZF
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import org.rut.util.algorithm.SortUtil; lMgguu~qg
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/** %w&+o.k/
* @author treeroot s)\PY
* @since 2006-2-2 (#dR\Di
* @version 1.0 R~=c1bpdq
*/
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public class QuickSort implements SortUtil.Sort{ Ku'a,\7z
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/* (non-Javadoc) ndQw>
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KcT(/!
*/ \(??Ytc<B
public void sort(int[] data) { 5%TSUU+<I
quickSort(data,0,data.length-1); IR"C?
} ^C
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private void quickSort(int[] data,int i,int j){ ^2dQVV.
int pivotIndex=(i+j)/2; &DW !$b
file://swap W(62.3d~}?
SortUtil.swap(data,pivotIndex,j); xjp0w7L)J
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int k=partition(data,i-1,j,data[j]); 2H;#L`Z*
SortUtil.swap(data,k,j); )7NK+k
if((k-i)>1) quickSort(data,i,k-1); b0}dy\dnQ
if((j-k)>1) quickSort(data,k+1,j); hrX/,D -c
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} 5Y;&L!T
/** mBL?2~M
* @param data z$QoMq]
* @param i HMD\)vMK6
* @param j rrC\4#H[??
* @return I`+,I`~u
*/ /pRv
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private int partition(int[] data, int l, int r,int pivot) { \E c*Gq?.
do{ ;~1xhpTk
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); e6*,MnqBh
SortUtil.swap(data,l,r); D_(NLC
} W2`3PEa
while(l SortUtil.swap(data,l,r); 44 8%yP
return l; |A68+(3u
} X+{brvM<
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} Ca5LLG
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改进后的快速排序: vMY!Z1.*
2asRJ97qES
package org.rut.util.algorithm.support; ,+d8
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import org.rut.util.algorithm.SortUtil; l_;6xkv4
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/** b*tb$F
* @author treeroot +mft
* @since 2006-2-2 |7KWa(V5I
* @version 1.0 HS*Y%*
*/ @8w[Z o~
public class ImprovedQuickSort implements SortUtil.Sort { :W>PKW`^
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private static int MAX_STACK_SIZE=4096; cBbumf 9C
private static int THRESHOLD=10; \
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/* (non-Javadoc) # bjK]+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &E6V'*<93
*/ cDYOJu.
public void sort(int[] data) { 0$b4\.0>~
int[] stack=new int[MAX_STACK_SIZE]; YvuE:ia
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int top=-1; E`xpZ>$mPx
int pivot; S~H>MtX(<
int pivotIndex,l,r; @*|UyK.
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stack[++top]=0; QrFKjmD<
stack[++top]=data.length-1; mJ(ElDG
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while(top>0){ Xf"<
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int j=stack[top--]; O8>&J-+2
int i=stack[top--]; raSga'uT;
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pivotIndex=(i+j)/2; } 7:T?
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pivot=data[pivotIndex]; j[mII5e7g
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SortUtil.swap(data,pivotIndex,j); ?7lW@U0
9@IL5 47V
file://partition ;;
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l=i-1; 4M]l~9;A
r=j; lup2>"?*
do{ tcRJ1:d
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G,B4=[Y
SortUtil.swap(data,l,r); 0y/31hp
} bWlYQ
while(l SortUtil.swap(data,l,r); x@/:{B
SortUtil.swap(data,l,j); 3` oOoKX
$`%Om WW{
if((l-i)>THRESHOLD){ C4gES"T
stack[++top]=i; k?L2LIB<
stack[++top]=l-1; !\BM
} ~Ma r
if((j-l)>THRESHOLD){ vGPsjxk&
stack[++top]=l+1; nN-S5?X#
stack[++top]=j; \G)F*
} -])=\n!=
j`$$BVZ
} u^JsKG+,:
file://new InsertSort().sort(data); goF87^M
insertSort(data); @^.W|Zh[&
} aHYISjZ]>
/** 1kUlQ*[<|
* @param data q3h&V
*/ W\w#}kY
private void insertSort(int[] data) { :-Py0{s
int temp; S ++~w9}
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yf8kBT:&S
} IPYwUix
} dkCUU
} es x/{j;<u
hLk6Hqr7
} `JPkho
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归并排序: uZJfIC<>
woPj>M
package org.rut.util.algorithm.support; [>\|QS|
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import org.rut.util.algorithm.SortUtil; ^i!6z2/
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/** CAs:>s
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* @author treeroot 6W=V8
* @since 2006-2-2 qz (x
* @version 1.0 SUUN_w~
*/ ]Zc|<f;
public class MergeSort implements SortUtil.Sort{ i-5,*0e6m
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/* (non-Javadoc) /"j3B\`?
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dpNERc5
*/ y;8&J{dd
public void sort(int[] data) { ,%l}TSs
int[] temp=new int[data.length]; Q!U}
mergeSort(data,temp,0,data.length-1); ^ W?cuJ8
} p`c_5!H
5ct&fjmR_
private void mergeSort(int[] data,int[] temp,int l,int r){ 23>[-XZb[O
int mid=(l+r)/2; NE8W--Cg|
if(l==r) return ; %%uE^nX>
mergeSort(data,temp,l,mid); ja';NIO-
mergeSort(data,temp,mid+1,r); tS]
for(int i=l;i<=r;i++){ >5L_t
temp=data; _"yA1D0d_
} 1H/I-
int i1=l; f6`GU$H
int i2=mid+1; U{hu7
for(int cur=l;cur<=r;cur++){ ZqVbNIY
if(i1==mid+1) W_Y8)KxG:L
data[cur]=temp[i2++]; BrwC9:
else if(i2>r) RK|*yt"f"
data[cur]=temp[i1++]; p.=9[`
else if(temp[i1] data[cur]=temp[i1++]; o1$u;}^ |
else {.{Wl,|7
data[cur]=temp[i2++]; }a6t <m`V
} V1V0T ,
} "yaxHd
f=R+]XPzz
} &o;0%QgF
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改进后的归并排序: K -rR)-rI
6-
i.*!I 8
package org.rut.util.algorithm.support; e;6KxvX~
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import org.rut.util.algorithm.SortUtil; fj5g\m
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/** #lP8/-s^
* @author treeroot =79R;|5
* @since 2006-2-2 e}e8WR=B
* @version 1.0 y3dk4s77
*/ *n? 1C"l
public class ImprovedMergeSort implements SortUtil.Sort { 3N+lWuE}K
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private static final int THRESHOLD = 10; D%YgS$p[M$
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/* RU:Rt'
* (non-Javadoc) ^QRg9s,T<
* { :tO
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* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ump~)?_B
*/ "n!yK
public void sort(int[] data) { G:=hg6'
int[] temp=new int[data.length]; `@h|+`h
mergeSort(data,temp,0,data.length-1); 7w/IHM L
} &[.`xZ(|
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private void mergeSort(int[] data, int[] temp, int l, int r) { =^nb+}Nz(
int i, j, k; d,"LZ>hNY*
int mid = (l + r) / 2; V0\[|E;F
if (l == r) zN4OrG0
return; 1PkCWRpR
if ((mid - l) >= THRESHOLD) +T+@g8S
mergeSort(data, temp, l, mid); ;Ba%aaHl
else N6Ud(8*
insertSort(data, l, mid - l + 1); afEa@et'
if ((r - mid) > THRESHOLD) ^/2I)y]W0
mergeSort(data, temp, mid + 1, r); 9oWU]A\k>
else Dm>"c;2
insertSort(data, mid + 1, r - mid); Tu#< {'1$
RdTM5ANT
for (i = l; i <= mid; i++) { y/lF1{}5
temp = data; I{`7 0
} Ux[<g%F"
for (j = 1; j <= r - mid; j++) { V#t_gS
temp[r - j + 1] = data[j + mid]; ~U9K<_U
} UNdD2Fd9
int a = temp[l]; d8j1L/e
int b = temp[r]; 0lfK}
a
for (i = l, j = r, k = l; k <= r; k++) { :d36oiHKu
if (a < b) { yB*,)x0
@
data[k] = temp[i++]; 1o_kY"D<
a = temp; z ^gJy,T
} else { kN1MPd4Yh
data[k] = temp[j--]; H",B[
YK
b = temp[j]; tli.g
} *z=_sD?1
} kI\m0];KnQ
} RU )35oEV|
g,ZA\R~
/** @
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* @param data R?2sbK4Cz
* @param l <qCa9@Ea
* @param i g*|j+<:7
*/ L[` l80
private void insertSort(int[] data, int start, int len) { KhCP9(A=Qo
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ]rmBM
} h~MV=7
lE
} jcH@*c=%e
} 8sG3<$Z^
} n\#YGL<n
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堆排序: XC4Z ,,ah"
6K $mW
package org.rut.util.algorithm.support; G7-BeA8
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import org.rut.util.algorithm.SortUtil; i%glQT
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/** fn#8=TIDf
* @author treeroot BG{f)2F\
* @since 2006-2-2 $6QIYF""
* @version 1.0 B*7kX&Uq
*/ eE;tiX/
public class HeapSort implements SortUtil.Sort{ _`$LdqgE
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/* (non-Javadoc) ]-PzN'5\'
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;`9f<d#\
*/ Otn,UoeeB
public void sort(int[] data) { *pl6 V|
MaxHeap h=new MaxHeap(); ;?6vKpj;
h.init(data); 5:Qz
for(int i=0;i h.remove(); `S&a.k
System.arraycopy(h.queue,1,data,0,data.length); qZoDeN-CC
} JFq
wC=-
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private static class MaxHeap{ d{
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yI w}n67
void init(int[] data){ l }{{7~C`
this.queue=new int[data.length+1]; [+#m
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for(int i=0;i queue[++size]=data; 8$Q`wRt(%
fixUp(size); KuNLu31%
} xQ?>72grP
} f*ZU a
St=nf\P&F
private int size=0; [^>XRBSm
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private int[] queue; P{L=u74b{x
SNEhP5!
public int get() { V>$( N/1
return queue[1]; [f6uwp
} PN}+LOD<t
8(3(kZx S
public void remove() { 5Iu5N0cn
SortUtil.swap(queue,1,size--); @xG&K{j
fixDown(1); xh6(~'$
} (1/Sf&2i
file://fixdown n
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private void fixDown(int k) { 9rB3h`AVF
int j; IQQv+af5
while ((j = k << 1) <= size) { D)*
if (j < size %26amp;%26amp; queue[j] j++; On C)f
if (queue[k]>queue[j]) file://不用交换 OY*y<