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。 91\Sb:>
插入排序: ?1.WF}X'
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package org.rut.util.algorithm.support; j"r7M|Z+V
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import org.rut.util.algorithm.SortUtil; q|ZzGEj:OV
/** V\nj7Gr:sF
* @author treeroot 8pXqgIbmb
* @since 2006-2-2 >&YUV.mLY
* @version 1.0 %?X6TAtH
*/ mW=9WV
public class InsertSort implements SortUtil.Sort{ eh;L])~C
85:KlBe%+
/* (non-Javadoc) +5x{|!Pn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y(&rlL(sPK
*/ eq(1'?7]`G
public void sort(int[] data) { uGpLh0
int temp; 8 RA
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q2 Dh(
} _$KEE|9
} ,4HZ-|EOZ
} puAjAvIax
Oq*;GR(Q
} Oy_%U*
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冒泡排序: cV4]Y(9
3gv@JGt7`
package org.rut.util.algorithm.support; tx7B?/5D
{BY(zsl
import org.rut.util.algorithm.SortUtil; %n^ugm0B
: G'a"%x
/** LeV";=_n
* @author treeroot 7/zaf
* @since 2006-2-2 @TJ2
|_s6]
* @version 1.0 8?N![D\@
*/ QlMv_|`9
public class BubbleSort implements SortUtil.Sort{ K=1prv2
s`en8%
/* (non-Javadoc) ]E$bK
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >rXD Lj-e
*/ Vg~10Q
public void sort(int[] data) { '{w[).c.
int temp; k=4C"
for(int i=0;i for(int j=data.length-1;j>i;j--){ l5nm.i<M
if(data[j] SortUtil.swap(data,j,j-1); vA2>&YDFX
} q 7-ZPX
} T3NH8nH9"z
} lhX4MB"
} >dJ[1s]
1i&|}"
} to;^'#B
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选择排序: 7J1f$5$m5
O%f{\Fr
package org.rut.util.algorithm.support; vNHvuwK
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import org.rut.util.algorithm.SortUtil; !l5@L\
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/** v7/k0D .
* @author treeroot lnGg1/
* @since 2006-2-2 D*/fY=gK
* @version 1.0 g:s|D
hE[
*/ E/<n"'0ek
public class SelectionSort implements SortUtil.Sort { O^n\lik
OX7a72z
/* WmOu#5*;
* (non-Javadoc) GX=U6n>
* J"-/ok(<@
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7 lSR
*/ &4wwp !J
public void sort(int[] data) { -"EPU]q
int temp; j\HZ5
for (int i = 0; i < data.length; i++) { #^tnRfS"
int lowIndex = i; %]1te*_
for (int j = data.length - 1; j > i; j--) { |]~],
if (data[j] < data[lowIndex]) { mQ9y{}t=4
lowIndex = j; LrT?
]o
}
ZH<qidpR
} FX!Qd&kl1
SortUtil.swap(data,i,lowIndex); Zrzv';
} X%5 `B2Wu
} G8WPXj(
YU XxQ|
} x*p'm[Tdtm
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Shell排序: SmAii}-jf
kQp*+ras
package org.rut.util.algorithm.support; )NK#}c~5
x)pR^t7u8
import org.rut.util.algorithm.SortUtil; m/q`k
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/** o;21|[z
* @author treeroot G#~U\QlG-
* @since 2006-2-2 yg4#,4---b
* @version 1.0 1\)C;c,
*/ Y6T{/!
public class ShellSort implements SortUtil.Sort{ Tz~a. h@
6E2#VT>@/
/* (non-Javadoc) |h\A5_0_
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T
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*/ jZH4]^De
public void sort(int[] data) { uqD|j:~ =k
for(int i=data.length/2;i>2;i/=2){ 1SH]$V4C
for(int j=0;j insertSort(data,j,i); >[&ser
} d)0|Q
} )%<,JD
insertSort(data,0,1); gD;T"^S+
} bM2x
(E\O
7{]L{ j-
/** MEM(uBYKOb
* @param data fCZ"0P3(
* @param j ,J=l Hj
* @param i :9e4(7~ona
*/ ?mF:L"i
private void insertSort(int[] data, int start, int inc) { S..8,5mBH
int temp; :YPi>L5
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1!yd(p=cL
} xLms|jS
} $inKI
} j\NCoos
B)/c]"@89
} Mf !S'\
f@q.kD21
快速排序: o2;Eti
i'10qWz
package org.rut.util.algorithm.support; %&0/Ypp=
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import org.rut.util.algorithm.SortUtil; =nO:R, U
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/** WJI}~/z;C
* @author treeroot .Yvy37n((
* @since 2006-2-2 lANi$
:aE
* @version 1.0 ,tDLpnB@;
*/ pMY7{z
public class QuickSort implements SortUtil.Sort{ [XH,~JZJj
aHb&+/HZ
/* (non-Javadoc) IwOL1\'T4
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S(^YTb7
*/ &kn?=NW
public void sort(int[] data) { BS?i!Bm 7
quickSort(data,0,data.length-1); 72/ bC
} -8vGvI>
private void quickSort(int[] data,int i,int j){ Y;iI=U
int pivotIndex=(i+j)/2; |onLJY7)
file://swap s
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SortUtil.swap(data,pivotIndex,j); VbTX;?
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int k=partition(data,i-1,j,data[j]); <WnIJum
SortUtil.swap(data,k,j); #DARZh U)
if((k-i)>1) quickSort(data,i,k-1); um%s9
if((j-k)>1) quickSort(data,k+1,j); '+ mI
atW^^4:
} t~)4f.F:
/** df {\O*6
* @param data Ujqnl>l
* @param i /D yig
* @param j K9Onjs%U
* @return SL`; `//
*/ }_-tJ.
private int partition(int[] data, int l, int r,int pivot) { X"mPRnE330
do{ W7(5z
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,L<x=Dg
SortUtil.swap(data,l,r); G(wstHT;/
} 2Dt^W.!
while(l SortUtil.swap(data,l,r); N"tX K
return l; ^uphpABpD
} >;F}>_i
/reGT!u
} x>,wmk5)
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改进后的快速排序: Yakrsi/jV}
Ut C<TBr
package org.rut.util.algorithm.support; \So)g)K
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import org.rut.util.algorithm.SortUtil; }'86hnW
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/** 6xY6EC
* @author treeroot }eI9me@Aa
* @since 2006-2-2 mKyF<1,m
* @version 1.0 8G2QI4
*/ B5h)F> &G
public class ImprovedQuickSort implements SortUtil.Sort { M+^ NF\
8zcSh/
private static int MAX_STACK_SIZE=4096; ^CM@VmPp
private static int THRESHOLD=10; M,yxPHlN
/* (non-Javadoc) I,05'edCQ
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t-n'I/^5
*/ c6=XJvz
public void sort(int[] data) { 3 ]@wa!`
int[] stack=new int[MAX_STACK_SIZE]; dd;rnev+
t;0]d7ey'
int top=-1; 1|s`z
int pivot; 0v6Z4Ahpo
int pivotIndex,l,r; $ %|b6Gr/&
;CoD5F!
stack[++top]=0; T00sYoK
stack[++top]=data.length-1; ~IPATG
{X<_Y<
while(top>0){ ;Jb%2?+=!
int j=stack[top--]; MtgY `p
int i=stack[top--]; 2P${5WT
b"`Q&V.
pivotIndex=(i+j)/2; Oiqc]4TL
pivot=data[pivotIndex]; H#WqO<<v
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SortUtil.swap(data,pivotIndex,j); Snn4RB<(
3u 7A(
file://partition ?)-anoFyVW
l=i-1; ?' mP`9I
r=j; 0LP0q9S:9
do{ EP<{3fy
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); WX`wz>KK^
SortUtil.swap(data,l,r); %&lwp
} F9tWJJUsr
while(l SortUtil.swap(data,l,r); 53.jx38xS
SortUtil.swap(data,l,j); T-lP=KF=
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if((l-i)>THRESHOLD){ oK<H/76x
stack[++top]=i; ^y93h8\y
stack[++top]=l-1; s&CK
} 0"N4WH O
if((j-l)>THRESHOLD){ __uk/2q
stack[++top]=l+1; ar'VoL}
stack[++top]=j; Sj*W|n\gj
} M0e&GR8<z>
#,FXc~ V
} #Aj#C>
file://new InsertSort().sort(data); `K[r5;QFKf
insertSort(data); ^5>W`vwp
} qI
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/** 7Up-a^k^`
* @param data iAPGP-<6
*/ \{Je!#
private void insertSort(int[] data) { kQ_Vj7
int temp; 9x(t"VPuS
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &|Rww\oJ
} 7fd,I% v
} "jq6FT)O
} o4j!:CI
G=CP17&h6
} !c0x^,iE
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归并排序: sYSq >M
Jvj* z6/a
package org.rut.util.algorithm.support; Cv&>:k0V
T
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import org.rut.util.algorithm.SortUtil; :RYYjmG5;
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/** &N3a`Ua
* @author treeroot y1Wb/ d
* @since 2006-2-2 \q^dhY>)
* @version 1.0 '!4\H"t
*/ (Hmh b}H
public class MergeSort implements SortUtil.Sort{ y]!mN
4{ZVw/VP,-
/* (non-Javadoc) yFDt%&*n^
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JE@3 UXg
*/ zP@\rZ @4
public void sort(int[] data) { onS4ZE3B
int[] temp=new int[data.length]; Wh"xt:
mergeSort(data,temp,0,data.length-1); ;Yg/y
} N
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N[DKA1Ei
private void mergeSort(int[] data,int[] temp,int l,int r){ %+;am Rb
int mid=(l+r)/2; @ kba^z
if(l==r) return ; Q'j00/K
mergeSort(data,temp,l,mid); &`-e; Xt
mergeSort(data,temp,mid+1,r); yV6U<AP$3
for(int i=l;i<=r;i++){ })q8{Qj!
temp=data; /nt%VLms%
} !HW?/-\,O
int i1=l; O-~cj7
0\
int i2=mid+1;
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for(int cur=l;cur<=r;cur++){ w2`JFxQ^x
if(i1==mid+1) 62[_u]<Yub
data[cur]=temp[i2++]; 6pZ/C<Y|W
else if(i2>r) 6$csFW3R
data[cur]=temp[i1++]; O\@0o|NM
else if(temp[i1] data[cur]=temp[i1++]; b=L|GV@$
else 'k<~HQr
data[cur]=temp[i2++]; Z%SDN"+'g
} ?fpI,WFu
} %T;VS-f
|+<o(Q(
} [W dxMU
k4^!"~<+0
改进后的归并排序: S6_dmTV*
1vqc8lC
package org.rut.util.algorithm.support; w'mn O'%
78]( ZYJV
import org.rut.util.algorithm.SortUtil; UVsF !0
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/** Oe k$f,J-
* @author treeroot `YBHBTG'o!
* @since 2006-2-2 -9s&OKo`({
* @version 1.0 H]M[2C7#N
*/ @ "CP@^
public class ImprovedMergeSort implements SortUtil.Sort {
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5<oV>|*@{
private static final int THRESHOLD = 10; Ik=bgEF
_w%{yF6
/* ,pdf$)
XB
* (non-Javadoc) nEik;hAz
* f4|ir3oy
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }|c-i.0=
*/ /BM{tH
public void sort(int[] data) { F/df!I~
int[] temp=new int[data.length]; o'YK\L!p
mergeSort(data,temp,0,data.length-1); quq !Jswn
} 1t#|MH
?U_
O tR
private void mergeSort(int[] data, int[] temp, int l, int r) { T{F
' Y%
int i, j, k; T@r%~z
int mid = (l + r) / 2; QKt{XB6Y
if (l == r) Y}r UVn
return; KM-7w66V
if ((mid - l) >= THRESHOLD) XIp>PcU^
mergeSort(data, temp, l, mid); pJ@->V_
else -TNb=2en(
insertSort(data, l, mid - l + 1); [>:9#n
if ((r - mid) > THRESHOLD) O[9A} g2~
mergeSort(data, temp, mid + 1, r); ,sp( (SF]1
else qa?0GTAS
insertSort(data, mid + 1, r - mid); V24FzQ?z:.
f!cYLU1e@
for (i = l; i <= mid; i++) { <bh!wf6;
temp = data; :8lqo%5
} R^JtWjJR
for (j = 1; j <= r - mid; j++) { QY1|:(
temp[r - j + 1] = data[j + mid]; "^VPe[lA
} (<Kf
int a = temp[l]; q]P$NeEiZ"
int b = temp[r]; uCf _O~
for (i = l, j = r, k = l; k <= r; k++) { *p^*>~i9)
if (a < b) { QU)AgF[
data[k] = temp[i++]; $# J
a = temp; @$o^(my
} else { ygqWy1C
data[k] = temp[j--]; y,$zSPJCi
b = temp[j]; kfkcaj4l]
} z'k@$@:0XD
} 7KV0g1GQ
} VyOpPIP
6"GHVFB
/** tI+P&L"
* @param data I@I-QiI
* @param l -1]8f
* @param i U#(#U0s*-
*/ %I%OHs
private void insertSort(int[] data, int start, int len) { ~J|B
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [CG*o>n&|
} "pQ)5/e
} F{
sPQf'
} dpB\=
} b3+F~G-I"
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堆排序: PO]c&}/
o/I`L
package org.rut.util.algorithm.support; *|3G"B{w6
w(!COu
import org.rut.util.algorithm.SortUtil; *o#P)H
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/** |OO2>(Fj
* @author treeroot -AM(-
* @since 2006-2-2 VNxhv!w
* @version 1.0 Y
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*/ aHSl_[
public class HeapSort implements SortUtil.Sort{ *nV*WUS3
$ I|K<slV
/* (non-Javadoc) Y|F~w~Cb
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y86mg7[U/
*/ /"7_75
t
public void sort(int[] data) { G`FY[^:
MaxHeap h=new MaxHeap(); 4So
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h.init(data); je5GZFQw
for(int i=0;i h.remove(); ^:^8M4:
System.arraycopy(h.queue,1,data,0,data.length); :<R"Kk@
} ]+@I]\S4
$/$ 5{<
private static class MaxHeap{ ^ <+V[=X
hta y-
void init(int[] data){ {3|h^h_R
this.queue=new int[data.length+1]; T9-2"M=|<
for(int i=0;i queue[++size]=data; WXJ%hA
fixUp(size); ,qK3
3Bn
} Qjd<%!]+\
} /fC8jdp&
kZ<"hsh,Y'
private int size=0; v|; }}ol
g I@I.=y
private int[] queue; 1\%2@NR
Kb*X2#;*
public int get() { eBg:[44V
return queue[1]; 71OQ?fc
} XjU/7Q
^,6c9Dxy
public void remove() { j@Y'>3
SortUtil.swap(queue,1,size--); CP6xyXOlPB
fixDown(1); yFjjpEpnFt
} "D7wtpJ
file://fixdown 50NLguE
private void fixDown(int k) { #A9rI;"XI
int j; oO&R3zA1d
while ((j = k << 1) <= size) { *QP+p,L*
if (j < size %26amp;%26amp; queue[j] j++; jLF,R7t
if (queue[k]>queue[j]) file://不用交换 mD go@f
break; N:&EFfg3
SortUtil.swap(queue,j,k); >\ x!a:}
k = j; a0
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} ! ^TCe8
} tY!GJusd
private void fixUp(int k) { bTW#
f$q:4
while (k > 1) { RKO}
W#?
int j = k >> 1; _REAzxeS
if (queue[j]>queue[k]) l1ViUY&Z
break; Z:Y_{YAD
SortUtil.swap(queue,j,k); }MW+K&sIh
k = j; xw~3x*{
} GfL:0
} .[C@p`DZ
NRDXWscb
} -~WDv[[
o ^Ro 54i
} ,^uQw/
Q>
J9M`a
SortUtil: wlw`%z-B2
yp"h$
package org.rut.util.algorithm; _j}jh[M
rqz`F\A;%
import org.rut.util.algorithm.support.BubbleSort; n1;zml:7_
import org.rut.util.algorithm.support.HeapSort; ) S,f I
import org.rut.util.algorithm.support.ImprovedMergeSort; I7Xm~w!{qk
import org.rut.util.algorithm.support.ImprovedQuickSort; =RjseTS
import org.rut.util.algorithm.support.InsertSort; K%WG[p\Eu
import org.rut.util.algorithm.support.MergeSort; Q ?R3aJ
import org.rut.util.algorithm.support.QuickSort; 0vrx5E!
import org.rut.util.algorithm.support.SelectionSort; v&8s>~i`K
import org.rut.util.algorithm.support.ShellSort; V&Q_iE
vhKHiw9L
/** cE+Y#jB
* @author treeroot IT:8k5(L5j
* @since 2006-2-2 r!y3VmJ'm
* @version 1.0 <7Ry"z6g;
*/ B2l5}"{`
public class SortUtil { W*^_Ul|
public final static int INSERT = 1;
o3(:R0
public final static int BUBBLE = 2; JXF0}T)C
public final static int SELECTION = 3; !YENJJ
public final static int SHELL = 4; cN%@
nW0i
public final static int QUICK = 5; KK,
t !a
public final static int IMPROVED_QUICK = 6; _o'a|=Osx>
public final static int MERGE = 7; g1&>.V}!
public final static int IMPROVED_MERGE = 8; \x<i6&.
public final static int HEAP = 9; T*jQzcm~?
6}>CPi#
public static void sort(int[] data) { i>%A0.9
sort(data, IMPROVED_QUICK); (DY&{vudF
} ]\(Ho
private static String[] name={ \/F*JPhy
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" AfvIzsT0
}; L*(`ccU
G|.6%-
private static Sort[] impl=new Sort[]{ #&K? N
new InsertSort(), Ox9M![fC
new BubbleSort(), UOn:@Qn
new SelectionSort(), e3,@prr
new ShellSort(), `CY c>n"
new QuickSort(), WYd9p; k
new ImprovedQuickSort(), r2T$
;m.
new MergeSort(), vq:?a
new ImprovedMergeSort(), W?<<al*
new HeapSort() -1} &\=8M
}; +,T z +!
QzVo U |
public static String toString(int algorithm){ 9Xh1i`.D
return name[algorithm-1]; ;*njS1@
} uP$C2glyz
aW_Pv~
public static void sort(int[] data, int algorithm) { /z`.- D(
impl[algorithm-1].sort(data); |o<c`:;kt
} sQBKzvFO3
Q PrP3DK
public static interface Sort { I+W:}}"j
public void sort(int[] data); 6o&ZS @
} `APeS=<
&
G.]'pn
public static void swap(int[] data, int i, int j) { !3`X Gg
int temp = data; jx14/E+^
data = data[j]; qi$nG_<<Z
data[j] = temp; {'sp8:$a
} %\T#Ik~3
} m\G45%m