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。 E\!:MCL
插入排序: M
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qmUq9bV
package org.rut.util.algorithm.support; 9_IR%bm
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import org.rut.util.algorithm.SortUtil; X'N4a
/** <LM<,
* @author treeroot iqf+rBL
* @since 2006-2-2 $hB;r
* @version 1.0 m'1NZV%#
*/ #|^7{TN
public class InsertSort implements SortUtil.Sort{ 5r/QPJ<h
6suB!XF;
/* (non-Javadoc) Z5~dU{XsT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r$ue1bH}|
*/ SxXh
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public void sort(int[] data) { } {/4sll
int temp; h`&@>uEiq
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N^|r.J
} U@[P.y~J
} Y1AbG1n|
} EK.L>3
}]sI?&xB
} ><iE VrpN
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冒泡排序: DoWY*2E
bTC2Ya
package org.rut.util.algorithm.support; lD2>`s5
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import org.rut.util.algorithm.SortUtil; 1DcYc-k#
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/** M0o=bYI
* @author treeroot sBp|Lo
* @since 2006-2-2 tjk Y[
* @version 1.0 lj%8(X u
*/ Tp~yn
public class BubbleSort implements SortUtil.Sort{ $V?zJ:a>L
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/* (non-Javadoc) Rz`<E97-
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "n
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*/ XRs/gUT
public void sort(int[] data) { Ed#%F-1sX
int temp; EH3jzE3N
for(int i=0;i for(int j=data.length-1;j>i;j--){ lsW.j#yE!
if(data[j] SortUtil.swap(data,j,j-1); S$%/9^\jF
} 6f6_ztTL
} aGp <%d
} Hk2@X(
} (o^V[zV
4M(w<f\5F
} F~a5yW:R=)
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选择排序: Fhn883
?>q=Nf^ Q.
package org.rut.util.algorithm.support; =Cs$0aA
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import org.rut.util.algorithm.SortUtil; PGT!HdX#{
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/** P?n!fA>!
* @author treeroot O~d!*A
* @since 2006-2-2 eJ{"\c(
* @version 1.0 A#1aO
*/ _' n;rZ +
public class SelectionSort implements SortUtil.Sort { H?40yu2m5
O,qR$#l
/* hv*n";V
* (non-Javadoc) oZ6xHdPc4
* f;u;hQxs
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *-+~H1tP
*/ pzU">)
public void sort(int[] data) { .j88=t0
int temp; 9ciL<'H\
for (int i = 0; i < data.length; i++) { TOMvJ>bF
int lowIndex = i; g/z9bOgIX
for (int j = data.length - 1; j > i; j--) { 8f^URN<x
if (data[j] < data[lowIndex]) { C==tJog[
lowIndex = j; 3Un/-4uL
} F]yclXf('
} r\],5x'xSu
SortUtil.swap(data,i,lowIndex); ~R)w
9uq
} @{I55EQ]
} "G6d'xkP
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} *B:{g>0
7M;Y#=sR
Shell排序: 8x,;B_Zu
9U}EVpD
package org.rut.util.algorithm.support; (-dJ0!
qwFn(pK[
import org.rut.util.algorithm.SortUtil; m$LZ3=v%8
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/** "r"]NyM
* @author treeroot T>f-b3dk
* @since 2006-2-2 )STt3.
* @version 1.0 _%zU^aE
*/ ;SC|VcbyH
public class ShellSort implements SortUtil.Sort{ {##A|{$3%
;k/0N~
/* (non-Javadoc) Tg:NeAN7(
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3;:xEPb._6
*/ 4zf#zJw
public void sort(int[] data) { H8\{GGg
for(int i=data.length/2;i>2;i/=2){ fI$,?>
for(int j=0;j insertSort(data,j,i); |?8CV\D!
} gX(QRQ
} v?LJ_>hw*T
insertSort(data,0,1); 3J,/bgL5
} J.?p?-"
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#
/** _l8oB)
* @param data H~V=TEj
* @param j !Aw.f!
* @param i cuKgO{.GH
*/ $^
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private void insertSort(int[] data, int start, int inc) { V;:A&
int temp; b/5~VY*T
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); tQl=
} q0c)pxD%`
} i;dr(c/ft
} X 4/r#<Da
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} 5~[Fh2+
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快速排序: "t\9@nzdX
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package org.rut.util.algorithm.support; QM _~w\
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import org.rut.util.algorithm.SortUtil; 6w]]KA
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/** d,0pNav)
* @author treeroot A23 Z)`
* @since 2006-2-2 )7`~U"r
* @version 1.0 0>?mF]M
*/ ~~fL`"
public class QuickSort implements SortUtil.Sort{ WYzY#-j
e4`KnHsL
/* (non-Javadoc) QB@*/Le
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ome>Jbdhe
*/ jS- QTG!=
public void sort(int[] data) { eBN>|mE4N
quickSort(data,0,data.length-1); bFJn-g n
} x NC>m&T
private void quickSort(int[] data,int i,int j){ ;;`KkNysm
int pivotIndex=(i+j)/2; <_Lo3WGwc
file://swap )eG&"3kFe!
SortUtil.swap(data,pivotIndex,j); oDP|>yXC)
}`g*pp*
int k=partition(data,i-1,j,data[j]); Anm5Cvt;i
SortUtil.swap(data,k,j); Ux<h`
s
if((k-i)>1) quickSort(data,i,k-1); Fwqv1+
if((j-k)>1) quickSort(data,k+1,j); _j2`#|oG
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} %FRkvqV*
/** dW5z0VuB$/
* @param data i)p__Is
* @param i ;s!H
* @param j 07MLK8jS
* @return #nxx\,i>
*/ u4nXK
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private int partition(int[] data, int l, int r,int pivot) { So 5{E4[
do{ U!`'Qw;
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7xcYM
SortUtil.swap(data,l,r); qqAsh]Z
} !3&}r
while(l SortUtil.swap(data,l,r); h}d7M55#|
return l; G?g7G,|d
} Z:OO|x
KWY G\#S0]
} ^49moC-
8]L.E
改进后的快速排序: R.QcXz?d
Eg:p_F*lr
package org.rut.util.algorithm.support; 3_>1j
S`^W#,rj
import org.rut.util.algorithm.SortUtil; 9c 6V&b
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/** pJ(l=a
* @author treeroot `fRy"44nR
* @since 2006-2-2 Ue7W&N^E
* @version 1.0 g\Zk*5(
*/ aD^MoB3
public class ImprovedQuickSort implements SortUtil.Sort { @88 efF
SM<kE<q#
private static int MAX_STACK_SIZE=4096; CG7LF
private static int THRESHOLD=10; ",+uvJT1O
/* (non-Javadoc) 93dotuF
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S.jjB
*/ !<)_ F
public void sort(int[] data) { GwycSb1
int[] stack=new int[MAX_STACK_SIZE]; M}<=~/k`j
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int top=-1; }X?*o`sW
int pivot; WWLVy(
int pivotIndex,l,r; _7<U[63
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stack[++top]=0; QUDVsN#
stack[++top]=data.length-1; Ss:,#|
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while(top>0){ )-{~7@yqZ
int j=stack[top--]; a8 1%M
int i=stack[top--]; rifxr4c[X>
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pivotIndex=(i+j)/2; <j#EyGAV
pivot=data[pivotIndex]; -T8
gV1*(<
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SortUtil.swap(data,pivotIndex,j); $Da^z[8e
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file://partition iQF}x&a<
l=i-1; ~}AP@t*
r=j; {;E/l(HNI
do{ (?!0__NN;
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); E-D5iiF
SortUtil.swap(data,l,r); Uk9g^\H<D
} c
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9
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while(l SortUtil.swap(data,l,r); >N
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SortUtil.swap(data,l,j); WdAGZUp
Mvv=)?:
if((l-i)>THRESHOLD){ $%JyM
stack[++top]=i; t["Df;"O
stack[++top]=l-1; ^IH1@
} qrc/Q;$
if((j-l)>THRESHOLD){ VZoOdR:d
stack[++top]=l+1; }v,THj
stack[++top]=j; bEKLameKv
} ^j %UZ
nS4S[|w"
} q#`^EqtUF
file://new InsertSort().sort(data); f zO8by
insertSort(data); -#6*T,f0P(
} zf~zYZSr
/** 7
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* @param data to 6Q90(
*/ y7OG[L/
private void insertSort(int[] data) { &*aU2{,s,;
int temp; T6$<o\g'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); H\mVK!](D
} %#9 ~V
} YkPt*?,P/
} dO,05?q|
63S1ed[
} RH Vv}N0
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归并排序: &|'6-wD.
a7\L-T+
package org.rut.util.algorithm.support; XB-|gPk
j*4S] !
import org.rut.util.algorithm.SortUtil; `uA&w}(G
Nh9!lB m*]
/** ]ECZU
* @author treeroot e0HP~&BRs
* @since 2006-2-2 %}XMhWn{
* @version 1.0 }dJ ~Iy
*/ 8
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public class MergeSort implements SortUtil.Sort{ 3gy;$}Lq T
N RSse"
/* (non-Javadoc) QV$dKjMS
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B5HdC%8/}
*/ vXyo
public void sort(int[] data) { f+Me dc~
int[] temp=new int[data.length]; W;dzLgc
mergeSort(data,temp,0,data.length-1); ]a#]3(o]}
} FM"BTA:C
~#_$?_/(
private void mergeSort(int[] data,int[] temp,int l,int r){ lMez!qx,=
int mid=(l+r)/2; N>%KV8>{L
if(l==r) return ; T1HiHvJ
mergeSort(data,temp,l,mid); Xl6ZV,1=n7
mergeSort(data,temp,mid+1,r); 0DIM]PS
for(int i=l;i<=r;i++){ kZ-~
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temp=data; 8'"/gC{
} %@93^q[\2
int i1=l; NoZ4['NI\
int i2=mid+1; ?{,)XFck
for(int cur=l;cur<=r;cur++){
jnzz~:
if(i1==mid+1) ysJhP .
data[cur]=temp[i2++]; !9 LAXM
else if(i2>r) ' 5 qL
data[cur]=temp[i1++]; B4Af
else if(temp[i1] data[cur]=temp[i1++]; 50bP&dj&
else s*/ G-
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data[cur]=temp[i2++]; .N5R?fmD
} rbun5&RCyW
} gc7:Rb^E5t
Rn(F#tI
} I+?$4SC
ZX6=D>)u
改进后的归并排序: _AHB|P I
3KFrVhB=
package org.rut.util.algorithm.support; *Gh8nQbh
ajW$d!
import org.rut.util.algorithm.SortUtil; bA^:p3
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/** >\x_"oR
* @author treeroot zHc 4e
* @since 2006-2-2 2a(yR>#
* @version 1.0 )7"DR+;:
*/ Xa%&.&V
public class ImprovedMergeSort implements SortUtil.Sort { $_7d! S"
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private static final int THRESHOLD = 10; nB Iv{
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/* d>b,aj(
* (non-Javadoc) NT9- j#V
* !na0 Y
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hOL y*%
*/ }V#9tWW
public void sort(int[] data) { aco}pXz
int[] temp=new int[data.length]; [xs)u3b
mergeSort(data,temp,0,data.length-1); JvWs/AG1
} grfdvN
@uM3iO7&
private void mergeSort(int[] data, int[] temp, int l, int r) { y7IbE
int i, j, k; ;0Ct\ [eh
int mid = (l + r) / 2; S}p&\w H
if (l == r) yZ~eLWz
return; b}?@syy8
if ((mid - l) >= THRESHOLD) . I&)MZ>n
mergeSort(data, temp, l, mid); c>WpO Z,
else &0
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insertSort(data, l, mid - l + 1); ZJI1NCBZ
if ((r - mid) > THRESHOLD) Up/u|A$0V
mergeSort(data, temp, mid + 1, r); 07LL)v~
else W/ZahPPq
insertSort(data, mid + 1, r - mid); "G-0i KW;
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for (i = l; i <= mid; i++) { b^l
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temp = data; ;$tv8%_L[
}
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for (j = 1; j <= r - mid; j++) { T.w}6?2
temp[r - j + 1] = data[j + mid]; $L&9x3+?Kg
} B[/['sD
int a = temp[l]; LY88;*:S
int b = temp[r]; e<O;pM:
for (i = l, j = r, k = l; k <= r; k++) { lF}$`6
if (a < b) { i h$@:^\
data[k] = temp[i++]; vPl6Dasr
a = temp; WVT5VJ7*
} else { ZG\ I1
data[k] = temp[j--]; oA3W
{
b = temp[j]; .1z$ A
} J.e8UQ@=5
} K'{W9~9Lq
} LnI{S{]wDh
~q]|pD"\K|
/** :af;yu
* @param data "U5Ln2X{J
* @param l w(e+o.:
* @param i jQ_|z@OV
*/ $G-N0LV
private void insertSort(int[] data, int start, int len) { WP%{{zR$
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :U-US|)(2
} ^;CR0.4
} jY#(A23
} )*TW\v`B
} [`zbf_RyO
rMXOwkE
堆排序: e2-70UvW^
1y)$[e
package org.rut.util.algorithm.support; eA*Jfb
v-7Rb)EP
import org.rut.util.algorithm.SortUtil; rz[uuY7
EDgob^>
/** Lr24bv\
* @author treeroot =N@)CB7a
* @since 2006-2-2 L`HH);Ozw
* @version 1.0 BudWbZ5>Ep
*/ we H@S
public class HeapSort implements SortUtil.Sort{ cpF1Xp vT
-|k&L}\OB0
/* (non-Javadoc) S4{ Mu(^xT
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /:Z~"Q*r
*/ _8NEwwhc
public void sort(int[] data) { ;1R?9JN"
MaxHeap h=new MaxHeap(); X8,7_D$
h.init(data); %g]$Vfpy
for(int i=0;i h.remove();
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System.arraycopy(h.queue,1,data,0,data.length); R!_8jD:$
} rKy-u
V$-~%7@>;9
private static class MaxHeap{ 1|l)gfcP
VT5cxB<
void init(int[] data){ oXQ<9t1(
this.queue=new int[data.length+1]; x#:BE
for(int i=0;i queue[++size]=data; M ~ i+F0
fixUp(size); dxkRk#mf:
} e$ XY\{
} 22al
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private int size=0; :Er^"9'A2
_[$T29:8\]
private int[] queue; 56bud3CVs
EZ%w=
public int get() { *793H\
return queue[1]; T]Tdx.B
} , N@Yk.
x!"SD3r=4>
public void remove() { Bg 7j5
SortUtil.swap(queue,1,size--); L=
:d!UF
fixDown(1); S/nj5Lh
} Hyq@O8
file://fixdown 't0+:o">:
private void fixDown(int k) { v.l7Q
int j; 68koQgI[^
while ((j = k << 1) <= size) { (
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if (j < size %26amp;%26amp; queue[j] j++; `?zg3GD_
if (queue[k]>queue[j]) file://不用交换 o[bE
break; 96"yNqBf
SortUtil.swap(queue,j,k); gnQo1q{ 4
k = j; E'e8&3!bx
} Q)LXL.0h
} tb:,Uf>E
private void fixUp(int k) { M('s|>\l
while (k > 1) { =9qGEkd3
int j = k >> 1; lC'{QUC
if (queue[j]>queue[k]) u0bfX,e2U
break; ?Do^stq'4
SortUtil.swap(queue,j,k); c-4m8Kg?L
k = j; _KB{J7bs<a
} V>b2b5QAH,
} }J ei$0x
mQd4#LJ_
} _pz,okO[V
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} v`#j
,:#,}w_HyO
SortUtil: qj~flw1:
mF[o*N*
package org.rut.util.algorithm; lZ|L2Yg3uB
Q00R<hu@F
import org.rut.util.algorithm.support.BubbleSort; uipq=Yp.
import org.rut.util.algorithm.support.HeapSort; \H Wcd|
import org.rut.util.algorithm.support.ImprovedMergeSort; EJf #f
import org.rut.util.algorithm.support.ImprovedQuickSort; :]P~.PD5,
import org.rut.util.algorithm.support.InsertSort; GXDC@+$14
import org.rut.util.algorithm.support.MergeSort; mu6039qy
import org.rut.util.algorithm.support.QuickSort; s<[A0=LH
import org.rut.util.algorithm.support.SelectionSort; !c3```*
import org.rut.util.algorithm.support.ShellSort; EMVk:Vt]
1R0ffP]
/** r\$6'+Si
* @author treeroot r4O|()
* @since 2006-2-2 o&(wg(Rv
* @version 1.0 E,{GU
*/ {>8Pl2J
public class SortUtil { z%(Fo2)^
public final static int INSERT = 1;
BdN8
^W
public final static int BUBBLE = 2; :83,[;GO2
public final static int SELECTION = 3; FJP< bREQ
public final static int SHELL = 4; ^4c,U9J=
public final static int QUICK = 5; ;B&^yj&;
public final static int IMPROVED_QUICK = 6; `I5O4|K)
public final static int MERGE = 7; R/^@cA
public final static int IMPROVED_MERGE = 8; e]lJqC
public final static int HEAP = 9; |u@+`4o
:.*HQt9N
public static void sort(int[] data) { xK(IS:HJ*
sort(data, IMPROVED_QUICK); >[ eW">:>K
} ze`1fO|%
private static String[] name={ 6iG(C.b
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" '.?^uM
}; b2N6L2~V
6X/wdk
private static Sort[] impl=new Sort[]{ ev9;Ld
new InsertSort(), "\e:h|
.G
new BubbleSort(), $}t=RW
new SelectionSort(), sLb8*fak
new ShellSort(), "`pNH'
new QuickSort(), S]}}A
new ImprovedQuickSort(), n.*3,4.]
new MergeSort(), B[r<m J
new ImprovedMergeSort(), > 2#%$lX6
new HeapSort() <OTWT`G2
}; nqT> qS[Z
RctU' T
public static String toString(int algorithm){ |,b2b2v?
return name[algorithm-1]; zj<ahg%z
} \V,c]I
(8.{+8o
public static void sort(int[] data, int algorithm) { j~bAbOX12
impl[algorithm-1].sort(data); iOX Z]Xj5
} L>dkrr)e
74+A+SK[
public static interface Sort { (S`6Q
public void sort(int[] data); zDD4m`2
} NUCiY\td
)l&D]3$6K
public static void swap(int[] data, int i, int j) { #%:c0=
int temp = data; Ga v"C{G
data = data[j]; H$!+A
data[j] = temp; Z7fg
25
} qj&bo
} .20V
3