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。 @R%qP>_
插入排序: kh=<M{-t
p4k}B. f
package org.rut.util.algorithm.support; X=abaKl
f~Pce||e
import org.rut.util.algorithm.SortUtil; irq{ 21
/** uKXD(lzX
* @author treeroot "M-';;
* @since 2006-2-2 U*\K<fw
* @version 1.0 l4r>#n\yj
*/ ];6955I!
public class InsertSort implements SortUtil.Sort{ 0asP,)i
K$qY^oyQFw
/* (non-Javadoc) 3(t,x
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z#PaQp5F
*/ ru 9@|FgAE
public void sort(int[] data) { NQ[X=a8N
int temp; ty#6%
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Zr2T^p5u
} \<`oW>
} rFzj\%xa[
} ^Mq@} 0
[pmIQ228
} cUG^^3!
F@q9UlfB-
冒泡排序: 6s~B2t:Y
dm=?o
package org.rut.util.algorithm.support; r"{jrBK$
,<#Rk'y$
import org.rut.util.algorithm.SortUtil; ys`oHSf
3T0-RP*
/** f R@Cg
sw
* @author treeroot o_mjI:
* @since 2006-2-2 f sh9-iY8e
* @version 1.0 hbvcIGaT
*/ FNF `Z
public class BubbleSort implements SortUtil.Sort{ CR9wp]-Vd
snfFRc(RE
/* (non-Javadoc) 1_f+!
ns#
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0KgP'oWvY
*/ c"lwFr9x7
public void sort(int[] data) { =:w,wI.
int temp; F_R\
for(int i=0;i for(int j=data.length-1;j>i;j--){ &@CUxK
if(data[j] SortUtil.swap(data,j,j-1); wn.6l
`
} u*=^>LD
} eCN:
} h~9P34m
} 9m2FH~
w*/@|r39
} =gR/ t@Ld
.0xk},
选择排序: cf,6";8
`4xQ#K.-
package org.rut.util.algorithm.support; YU[#4f~
0wVM%Dng
import org.rut.util.algorithm.SortUtil; ^Ld5<
#9[>
/** +3-5\t`
* @author treeroot X,3\c:
* @since 2006-2-2 FA{Q6fi:2
* @version 1.0 :X'B K4EN
*/ [[<TW}
public class SelectionSort implements SortUtil.Sort { uQdy
=gJ{75tV3
/* nyR<pnuC'
* (non-Javadoc) 62'9lriQ
* 4Ps;Cor+
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zw+wq+2"
*/ Hqs-q4G$
public void sort(int[] data) { gAztdAsLM
int temp; P,)D0i
for (int i = 0; i < data.length; i++) { ey[Z<i1
int lowIndex = i; >M{98NH
for (int j = data.length - 1; j > i; j--) { 59j`Z^e
if (data[j] < data[lowIndex]) { {p/Yz#
lowIndex = j; +kYp!00
} ]k]bLyz\J
} 3>L5TYa
SortUtil.swap(data,i,lowIndex); }MMKOr(
} [efU)O&
} b?iPQ$NyQ
DDGDj)=`
} \7qj hA@
t(roj@!x_o
Shell排序: +3zQ"lLD^
[DeDU:
package org.rut.util.algorithm.support; Ty{
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fm^`
import org.rut.util.algorithm.SortUtil; A. tGr(r
}ixCbuD
/** z{1A x
* @author treeroot UTu~"uCR
* @since 2006-2-2 OwNM`xSa|\
* @version 1.0 ySiZ@i4
*/ Y(1?uVYW\d
public class ShellSort implements SortUtil.Sort{ &)tv4L&
,GVX1B?
/* (non-Javadoc) l%mp49<
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >S }X)4
*/ hwe6@T.#
public void sort(int[] data) { 7Rtjm
for(int i=data.length/2;i>2;i/=2){ 6g#yzex
for(int j=0;j insertSort(data,j,i); hV,T889'
} 'JdK0w#
} rWNe&gFM
insertSort(data,0,1); DN=W2MEfc
} <h#W*a
)ej1)RU"
/** Hk4k
* @param data |H^v8^%>zm
* @param j nxuH22:
* @param i Gq[5H(0/c
*/ !'#
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private void insertSort(int[] data, int start, int inc) { sDg1nKw(
int temp; 3p HI+a
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ?nL,Otz
} L58H)V3Pn
} 5p~5-_JX
} p JF
9Z
eA]8M^
} xqg4b{
4,:I{P_>6B
快速排序: Y&,}q_Z:
1CZO+MB&"$
package org.rut.util.algorithm.support; zq$L[X
DS%]7,g]
import org.rut.util.algorithm.SortUtil; O[U`(A:
@.k^ 8hc
/** M'R
] ''
* @author treeroot ~QUNR?h
* @since 2006-2-2 4*f+np
* @version 1.0 *mj=kJ7(
*/ 5-fASN.Lx
public class QuickSort implements SortUtil.Sort{ :!CnGKgt
#=)>,6Zw
/* (non-Javadoc) Zi]E!Tgn
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tzjv-9^V
*/ 0wTOdCvmb
public void sort(int[] data) { G!C }ULq
quickSort(data,0,data.length-1); H-e$~vEbP
} t%^&b'/Z
private void quickSort(int[] data,int i,int j){ K^"l.V#J
int pivotIndex=(i+j)/2; (
6zu*H)
file://swap kFkI[WKyZ
SortUtil.swap(data,pivotIndex,j); W58?t6!
=
{y5 L
int k=partition(data,i-1,j,data[j]); <"p-0=IgJ
SortUtil.swap(data,k,j); l SKq
if((k-i)>1) quickSort(data,i,k-1); L;?h)8
if((j-k)>1) quickSort(data,k+1,j); E+<GsN]
_XY(Qd
} cQd?,B3#F
/** *v8daF
* @param data sxuP"4
* @param i OUwnVAZZ6
* @param j [+A]E,pv]1
* @return 9vDOSwU*
*/ m0.g}N-w
private int partition(int[] data, int l, int r,int pivot) { }zkFl{/u
do{ `mD!z.`U
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :F[s
SortUtil.swap(data,l,r); '/loJz 1
} 862rol
while(l SortUtil.swap(data,l,r); ]i,o+xBKH
return l; K9 }Brhe
} vAop#V
AH'3
5Kf)
} byt$Wqdl
7 J6Z?
改进后的快速排序: F_w+8)DZ
Bnwq!i!M
package org.rut.util.algorithm.support; JP( tf+
;C1#[U1Uy
import org.rut.util.algorithm.SortUtil; T)q
Uf
H
mb3aUFxA;
/** 2PeMt^
* @author treeroot !^NZp%Yd
* @since 2006-2-2 Hiwij,1
* @version 1.0 oz]3
Tx
*/ v/~&n
public class ImprovedQuickSort implements SortUtil.Sort { 8[AU`F8W
An?#B4:
private static int MAX_STACK_SIZE=4096; 2Rwd\e.z
private static int THRESHOLD=10; `) ],FE*:
/* (non-Javadoc) 2(\PsN w!
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6M_ W(
*/ q6sb;?I
public void sort(int[] data) { A{)pzV25
int[] stack=new int[MAX_STACK_SIZE]; yeIS} O
!or_CJ8%
int top=-1; g__s(
IJ
int pivot; dOaCdnd~
int pivotIndex,l,r; sL\ {.ad5
5"1wz
stack[++top]=0; _e8v12s
stack[++top]=data.length-1; Hc|cA(9sh9
)OQ<H.X
while(top>0){ ?0sTx6x@
int j=stack[top--]; GCr]x '
int i=stack[top--]; n?D/bX p
?5};ONjN
pivotIndex=(i+j)/2; #J5_z#-Q;
pivot=data[pivotIndex]; KMqGWO*
!vK0|eV3
SortUtil.swap(data,pivotIndex,j); >6WZSw/Hq
?D9iCP~~
file://partition hG<[F@d
l=i-1; -nUK%a"(D
r=j; k}}'fA
do{ CsT&}-C
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 14uv[z6
SortUtil.swap(data,l,r); f2Xn !]o
} ~@@$-,}X
while(l SortUtil.swap(data,l,r); @6R6.i5d
SortUtil.swap(data,l,j); H)&iFq
_):@C:6
if((l-i)>THRESHOLD){ GCw4sb4~w
stack[++top]=i; 0SIUp/.
stack[++top]=l-1; {<}Hut:a
} \WdSj
if((j-l)>THRESHOLD){ x\:KfYr4Y;
stack[++top]=l+1; br k*;
stack[++top]=j; ~d\V>
} 1BEc"
C+`V?rp=s
} H{9P=l
file://new InsertSort().sort(data); [wQJVYv
insertSort(data); Z1$U[Tsd
} 8D? $@!-
/** ~FXq%-J
* @param data 7\nXJ381
*/ S&[9Vb
private void insertSort(int[] data) { glROT@
int temp; ij3W8i9'
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^liW*F"UY
} L+@X]OW8
} P&:[pPG
} =^{MyR7
DNqC*IvuzM
} p__N6a
rL+.3ZO):P
归并排序: SGy2&{\Z
IBu\Sh-
package org.rut.util.algorithm.support; Pn@DHYP
cmCD}Skk
import org.rut.util.algorithm.SortUtil; SG0PQ
t7V7 TL!5'
/** (64es)B}"
* @author treeroot {5%d#|?
* @since 2006-2-2 =_@) KWeX$
* @version 1.0 ug;\`.nT^
*/ ){eQ.yW
public class MergeSort implements SortUtil.Sort{ L=HnVgBs
x`I Wo:j
/* (non-Javadoc) 5~2_wWjX
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MujEjD "|
*/ rb'mFqg*u
public void sort(int[] data) { eq&QWxiD*
int[] temp=new int[data.length]; @}{uibLD\
mergeSort(data,temp,0,data.length-1); .O#7X
} w?N>3`Jnf
,PJC FQMR
private void mergeSort(int[] data,int[] temp,int l,int r){ )4:]gx#cr
int mid=(l+r)/2; <1*\ ~CX
if(l==r) return ; R4k+.hR
mergeSort(data,temp,l,mid); [)0^*A2
mergeSort(data,temp,mid+1,r); 2@ZRz%(Oa&
for(int i=l;i<=r;i++){ 4Xt`L"f
temp=data; /P]N40_@
} ?(Plb&kR
int i1=l; O2 + K
int i2=mid+1; vfm Y>nr
for(int cur=l;cur<=r;cur++){ 7#9%,6Yi
if(i1==mid+1) $T7 qd
data[cur]=temp[i2++]; Nvh&=%{g
else if(i2>r) 15' fU!
data[cur]=temp[i1++]; Z6Kp-z(l3
else if(temp[i1] data[cur]=temp[i1++]; >*!^pbZfX
else mU]^PC2[
data[cur]=temp[i2++]; }ALli0n`V)
} 9zCuVUcd$.
} G^dzE/:
%4YSuZg
} tw\1&*:
m^TN6/])
改进后的归并排序: pm:- E(3#
2*Pk1vrI
package org.rut.util.algorithm.support; co^h2b
UK,sMKbl1
import org.rut.util.algorithm.SortUtil; ,]]IJ;:w
) vVf- zU
/** y+{)4ptg$<
* @author treeroot h5-yhG
* @since 2006-2-2 YmjA!n
* @version 1.0 hJir_=
*/ 3/]FT#l]i
public class ImprovedMergeSort implements SortUtil.Sort { y"U)&1 c%
$MfRw
private static final int THRESHOLD = 10; ?<8c
\ n^[!e"`
/* 5dD8s-;^T
* (non-Javadoc) /<(-lbq,
* 87eH~&<1
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h/8p2Mrqi
*/ VhAJ1[k4!
public void sort(int[] data) { pQC|_T#u
int[] temp=new int[data.length]; s| Q1;%Tj
mergeSort(data,temp,0,data.length-1); nXI8 `7D
} c813NHW
~
L>M-D4o
private void mergeSort(int[] data, int[] temp, int l, int r) { +o"CMI
int i, j, k; ;#0$iE
int mid = (l + r) / 2; D. x8=|;
if (l == r) gNA!)}m\
return; e+4Eiv
if ((mid - l) >= THRESHOLD) Z5)v
mergeSort(data, temp, l, mid); EYCZuJxv
else EV w {G<
insertSort(data, l, mid - l + 1); D<<q5gG
if ((r - mid) > THRESHOLD) Wv;,@xTZ
mergeSort(data, temp, mid + 1, r); ?.lo[X<,*
else KtH^k&z.f
insertSort(data, mid + 1, r - mid); qK9A
/Mc
d~h;|Bl[
for (i = l; i <= mid; i++) { pLV
%g#h
temp = data; |3Oyg ?2
} t imY0fx#
for (j = 1; j <= r - mid; j++) { yx:+Xy*N
temp[r - j + 1] = data[j + mid]; Y5;afU='
} tLq]#9kL
int a = temp[l]; U[8F{LX
int b = temp[r]; ^&8hhxCPu|
for (i = l, j = r, k = l; k <= r; k++) { {~s\a2YH
if (a < b) { I;eoy,
data[k] = temp[i++]; eO*s,*
a = temp; RO%M9LISI
} else { !y'>sAf
data[k] = temp[j--]; Ht\2 IP
b = temp[j]; "Jg.)1Jw
} H270)Cwn+
} [^6z>
} J]{<Z?%
2 >j0,2
/** YPNW%N!$|
* @param data -/0\_zq7
* @param l Q4a7g$^
* @param i bqp^\yu-E
*/ $8AW
private void insertSort(int[] data, int start, int len) { $|3zsi2
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 3]9Rmx
} -"i$^Q`
} wAX;)PLg
} ">eled)O
} !IO\g"y~|%
b09xf"D
堆排序: [{[m)Z^
/`DKX }
package org.rut.util.algorithm.support; 37Q8Yf_
llWY7u"
import org.rut.util.algorithm.SortUtil; 1EC;t1.7
HuU$x;~
/** z\"
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* @author treeroot tY!l}:E[
* @since 2006-2-2 udBIEW,`
* @version 1.0 J[hmY= ,
*/ 'g'RXC}D>
public class HeapSort implements SortUtil.Sort{ .s!0S-RkC
'-[hy>t
/* (non-Javadoc) Z~8%bfpe
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &NoA, `|7
*/ WWZ<[[ >
public void sort(int[] data) { (FaYagD
MaxHeap h=new MaxHeap(); =s]2?m
h.init(data); bM:4i1Z
for(int i=0;i h.remove(); x;E/
System.arraycopy(h.queue,1,data,0,data.length); 0R[fH
} XBkaum4j
[6JDS;MIN
private static class MaxHeap{ 0j6b5<Gpc*
c ^.^5@
void init(int[] data){ d,(q3
this.queue=new int[data.length+1]; Fw{@RQf8
for(int i=0;i queue[++size]=data; .35~+aqC
fixUp(size); V\{@c%xW
} ?<
teHFj
} ]sL.+.P
Y;huTZ
private int size=0; k}&wy
Ka-o$o[^u`
private int[] queue; JehanF[
F~
\ONO5
public int get() { hif;atO
return queue[1]; YlGUd~$`"+
} ort*Ux)
V:J|shRo
public void remove() { q0Q[]|L
SortUtil.swap(queue,1,size--); "RK"Pn+
fixDown(1); .ve_If-Hg
} 7 vFmB
file://fixdown U]vUa^nG
private void fixDown(int k) { .PVYYhrt
int j; Y9<[n)>+
while ((j = k << 1) <= size) { +ZW>JjP*
if (j < size %26amp;%26amp; queue[j] j++; iQ8{N:58DN
if (queue[k]>queue[j]) file://不用交换 -Pt E+R[A
break; RH _b
SortUtil.swap(queue,j,k); h@=@
fa
k = j; 9"+MZ$
} :f39)g5>
} 6'/Zq
private void fixUp(int k) {
aY(s
&
while (k > 1) { ]?D$n
int j = k >> 1; SM
RKEPwp&
if (queue[j]>queue[k]) g |?}a]G
break; 5YNAb/!!F
SortUtil.swap(queue,j,k); "N=$=Dy>
k = j; ]wEI*c(
} JmK
)Y# A
} %M'`K
wzwv>@}
} a6./;OC
Ib{l$#
} ?&eS }skL
0[%{YmI{W
SortUtil: Cy6!?Mik
w`f66*@Q1
package org.rut.util.algorithm; :LNZC,-f}5
U2<q dknB
import org.rut.util.algorithm.support.BubbleSort; @YH>|{S&
import org.rut.util.algorithm.support.HeapSort; 4_j_!QH87
import org.rut.util.algorithm.support.ImprovedMergeSort; ov,
import org.rut.util.algorithm.support.ImprovedQuickSort; BF gxa#De
import org.rut.util.algorithm.support.InsertSort; S}U_uZ$b
import org.rut.util.algorithm.support.MergeSort; Y 'X!T8
import org.rut.util.algorithm.support.QuickSort; "i/GzD7 `n
import org.rut.util.algorithm.support.SelectionSort; (UjaL@G
import org.rut.util.algorithm.support.ShellSort; yGt[Qvx#
Ew
PJ|Z^
/** 1
Vt,5o5
* @author treeroot !wpK
+.D
* @since 2006-2-2 yLfyLyO L
* @version 1.0 E Zf|>^N
*/ 9D=X3{be#
public class SortUtil { D3dh,&KO\
public final static int INSERT = 1; Bl6I@w
public final static int BUBBLE = 2; s-Yu(X2
public final static int SELECTION = 3; T3
ie-G@<
public final static int SHELL = 4; ,"#nJC
public final static int QUICK = 5; hf9i%,J
public final static int IMPROVED_QUICK = 6; )z74,n7-
public final static int MERGE = 7; 4vG-d)"M2
public final static int IMPROVED_MERGE = 8; exiu;\+j
public final static int HEAP = 9; VgYy7\?p
fDB.r$|d
public static void sort(int[] data) { 4C_1wk('
sort(data, IMPROVED_QUICK); 5!Y\STn
} Wc+(xk
private static String[] name={ :KX*j$5U
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" F#<:ZByjJ@
}; 2D"my]FnF
`V V>AA5
private static Sort[] impl=new Sort[]{ iz/CC V L
new InsertSort(), |&MoQxw@
new BubbleSort(), TK'
5NM+4
new SelectionSort(), af>i
new ShellSort(), rqN+0CT
new QuickSort(), ,#,K_oz
new ImprovedQuickSort(), ?87\_wL/j
new MergeSort(), Vfy@?x=
&
new ImprovedMergeSort(), p7`9
d1n
new HeapSort() _/>I-\xWA
}; &0Y
|pY
a-,*iK{_u
public static String toString(int algorithm){ -YQS\@?
return name[algorithm-1]; ;k#_/c
} RbxQTM_:M
e> 9X
public static void sort(int[] data, int algorithm) { 7lwI]/ZH*
impl[algorithm-1].sort(data); ti9e(Jt!O
} bIBF2m4
iH-,l
public static interface Sort { DPW^OgL;
public void sort(int[] data); Lc}hjK
} L7rr/D
5TuwXz1v
public static void swap(int[] data, int i, int j) { e#mf{1&
int temp = data; `{Oqb
data = data[j]; Wq}6RdY$ZA
data[j] = temp; }\8-&VoY#X
} 6o6yx:
} fI0"#iv}