社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 8444阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 /dt!J `:  
插入排序: O/9%"m:i  
b0Ov+ )7#  
package org.rut.util.algorithm.support; @z)tC@  
ZT8J i?_n  
import org.rut.util.algorithm.SortUtil; "jO3Y/>S  
/**  \t# 9zn>  
* @author treeroot 3C=clB9<  
* @since 2006-2-2 9jGuelwN  
* @version 1.0 Sn2Ds)Pfx3  
*/ |$w={N^4  
public class InsertSort implements SortUtil.Sort{ xeM':hD.o  
MW$H/:3  
/* (non-Javadoc) /lB0>Us  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XYHCggy  
*/ .xkV#ol  
public void sort(int[] data) { l$VxE'&LQ  
int temp; _~ZQ b  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *C@[5#CA2z  
} ? ZHE8  
} 0tCOb9  
} {L4>2rF  
r@[VY g~  
} `3y!XET  
`bZU&A(`Be  
冒泡排序: MAe<.DHY  
ccn`f]5w  
package org.rut.util.algorithm.support; ;5Vk01R  
?3, 64[  
import org.rut.util.algorithm.SortUtil; s>@#9psm  
X!rQ@F3  
/** 3H'nRK},  
* @author treeroot N _~KZQ11^  
* @since 2006-2-2 oIvnF:c  
* @version 1.0 K>R;~ o  
*/ ))IgB).3M  
public class BubbleSort implements SortUtil.Sort{ ra%R:xX  
<a+eF}*2  
/* (non-Javadoc) Naf`hE9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AZy~Q9Kc  
*/ P10p<@?  
public void sort(int[] data) { RZd4(7H=q  
int temp; YR|(;B  
for(int i=0;i for(int j=data.length-1;j>i;j--){ W?^8/1U  
if(data[j] SortUtil.swap(data,j,j-1); _7=pw5[  
} 2JA&{ch  
} "6E1W,|{  
} ^\ vfos  
} W"-EC`nP  
sm2p$3v  
} xMSNrOc  
s-GleX<  
选择排序: vfJ3idvo*w  
q: Bt]2x  
package org.rut.util.algorithm.support; T6R7,Vt'v  
?)?IZ Qj  
import org.rut.util.algorithm.SortUtil; Jcalf{W6  
Nxbd~^j  
/** R(2HY Z  
* @author treeroot eg$5z Z  
* @since 2006-2-2 \3Q:K |  
* @version 1.0 z;bH<cQ  
*/ "[Qb'9/Jc  
public class SelectionSort implements SortUtil.Sort { `R=a@DQ  
r,u<y_YW  
/* *R_'$+  
* (non-Javadoc) Jt-X mGULB  
* (#j2P0B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hl6,#2$  
*/ aCU7w5  
public void sort(int[] data) { Gd30Be2gd  
int temp; 8 zQ_xE  
for (int i = 0; i < data.length; i++) { 9UeVvH  
int lowIndex = i; f MY;  
for (int j = data.length - 1; j > i; j--) { F!OOrW]p0  
if (data[j] < data[lowIndex]) { !j!Z%]7  
lowIndex = j; 9RG\UbX)^|  
} QL)>/%yU  
} -1jjB1  
SortUtil.swap(data,i,lowIndex); v87$NQvwQ  
} -yX.Jv  
} ~In{lQ[QX  
0Jm]f/iZ  
} M&uzOK+  
uY&=eQ_Cb  
Shell排序: Bii6Z@kS  
KWFyw>*)  
package org.rut.util.algorithm.support; k~0#'I9  
cT/3yf  
import org.rut.util.algorithm.SortUtil; BN+V,W  
-Bo86t)F  
/** wzD\8_;6N  
* @author treeroot lZ}izl  
* @since 2006-2-2 GN\8![J  
* @version 1.0 i Td-n9  
*/ ~?FK ; (  
public class ShellSort implements SortUtil.Sort{ u$W Bc\ j  
' 2>l  
/* (non-Javadoc) >?S\~Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CdX`PQ  
*/ WwW"fkv  
public void sort(int[] data) { Q/9a,85  
for(int i=data.length/2;i>2;i/=2){ |WB"=PE  
for(int j=0;j insertSort(data,j,i); ^4+r*YvcM  
} fH-NU-"  
} $ I#7dJ"*  
insertSort(data,0,1); @q,)fBZq  
} 'b8R#R\P  
pPoH5CzcK  
/** Oc7 >S.1  
* @param data fk+1#7{  
* @param j JYPxd~T/-  
* @param i SEYGy+#K  
*/ 7nm}fT z7  
private void insertSort(int[] data, int start, int inc) { j2M4H@  
int temp; $9G3LgcS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ;U |NmC+  
} [1NaH  
} f7Yz>To  
} _HwpPRVP/  
iu +3,]7Fm  
} .%_)*NUZ  
Po> e kz_E  
快速排序: d5Qd'  
7k `_#  
package org.rut.util.algorithm.support; 4KE)g  
U M@naU  
import org.rut.util.algorithm.SortUtil; /M:H9Z8!  
T: U4:"  
/** `Z:3` 7c  
* @author treeroot TaOOq}8c#  
* @since 2006-2-2 z4g+2f7h-X  
* @version 1.0 @.k5MOn  
*/ Hr6wgYPi  
public class QuickSort implements SortUtil.Sort{ i-,'.w  
>&1um5K  
/* (non-Javadoc) x:qr\Rz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QTYYghz  
*/ lj*8mS/;h  
public void sort(int[] data) { Yc d3QRB  
quickSort(data,0,data.length-1); Y[ ?`\c|  
} ~6kJ~R4  
private void quickSort(int[] data,int i,int j){ v~}5u 5 $O  
int pivotIndex=(i+j)/2; ) o xIzF  
file://swap %[XY67A3I  
SortUtil.swap(data,pivotIndex,j); !_dR'  
*="m3:c'J  
int k=partition(data,i-1,j,data[j]); ~5ubh2{  
SortUtil.swap(data,k,j); |YRY!V_w  
if((k-i)>1) quickSort(data,i,k-1); _jmkl B  
if((j-k)>1) quickSort(data,k+1,j); o!utZmk$  
8)Zk24:])_  
} s@s/ '^`  
/** }%x}fu#  
* @param data lBmm(<~Z  
* @param i Pcdf$a"`  
* @param j UWw}!1  
* @return \yG`Sfu2  
*/ qOi5WX6F/  
private int partition(int[] data, int l, int r,int pivot) { ]^ #`j  
do{ ec?V[v  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); um[!|g/  
SortUtil.swap(data,l,r); `NSy"6{Z  
} $/paEn"  
while(l SortUtil.swap(data,l,r); ~:EW>Fq%i  
return l; 8R}K?+]  
} *NlpotW,f  
+T2HE\  
} W' ep6O  
o%`npi1y  
改进后的快速排序: {zP#woz2Q  
> :Ze4}(  
package org.rut.util.algorithm.support; l E^*t`+  
xnbsg!`;7W  
import org.rut.util.algorithm.SortUtil; Sl>>SP  
6/6Rah!  
/** 9cfR)*Q  
* @author treeroot XsUUJuCG  
* @since 2006-2-2 b+@D_E-RJ  
* @version 1.0 Pz@/|&]  
*/ HabzCH  
public class ImprovedQuickSort implements SortUtil.Sort { Q0~j$Jc  
T4r5s  
private static int MAX_STACK_SIZE=4096; C),7- ?  
private static int THRESHOLD=10; k|FSz#Y  
/* (non-Javadoc) %!y89x=E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J?%}=_fsa  
*/ O@jqdJu  
public void sort(int[] data) { ,[`$JNc  
int[] stack=new int[MAX_STACK_SIZE]; =j~Q/-`EC0  
[M:S`{SbY  
int top=-1; XdsJwn F  
int pivot; 3taa^e.  
int pivotIndex,l,r; R#qI( V  
eN/G i<  
stack[++top]=0; |s=`w8p  
stack[++top]=data.length-1; m<:IFx#  
PLdn#S}.  
while(top>0){ >uy%-aXiVa  
int j=stack[top--]; A-wRah.M  
int i=stack[top--]; IgM v =^U  
PAZ$_eSK6  
pivotIndex=(i+j)/2; XmWlv{T+  
pivot=data[pivotIndex]; </s,pe79B  
%0XvJF)s  
SortUtil.swap(data,pivotIndex,j); w`gyE 6A  
eH <Jng  
file://partition fbC~WV#  
l=i-1; Mo^`\ /x!  
r=j; ZL_[4 Y  
do{ HY)ESU !  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); {TAw)!R~  
SortUtil.swap(data,l,r); %fhNxR  
} %8FN0  
while(l SortUtil.swap(data,l,r); BQjGv?p0s  
SortUtil.swap(data,l,j); "&QH6B1U6H  
$|a;~m>  
if((l-i)>THRESHOLD){ saW!9HQj  
stack[++top]=i; T*CME]  
stack[++top]=l-1; B8V,)rn  
} Eg8i _s~:  
if((j-l)>THRESHOLD){ R1%y]]*-P  
stack[++top]=l+1; '4u v3)P  
stack[++top]=j; yn~P{}68  
} JNo8>aFOb  
CMl~=[foW  
} T PYDs+U  
file://new InsertSort().sort(data); lf$Ve  
insertSort(data); YV([2  
} Ty+I8e]{  
/** X9XI;c;b-  
* @param data '*!L!VJ  
*/ Gi7RMql6Q  
private void insertSort(int[] data) { `fS^ j-_M  
int temp; 5DFZ^~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); JP'= UZ'  
} >Ko[Xb-8^_  
} ycX{NDGs  
} &s VadOBQ  
!ALZBB.r(  
} BSzkW}3q9  
"s_Z&  
归并排序: lhPGE_\  
bd \=h1  
package org.rut.util.algorithm.support; @8gEH+r  
EUcKN1  
import org.rut.util.algorithm.SortUtil; "JT;gaEm  
u#jC#u^M  
/** pFO^/P'  
* @author treeroot h?j_Ry  
* @since 2006-2-2 r@$ w*%  
* @version 1.0 5w<A;f  
*/ j_Nm87i]  
public class MergeSort implements SortUtil.Sort{ Pil;/t)"  
hh"-w3+  
/* (non-Javadoc) F ?=9eISLJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xsP4\C>  
*/ d2jr8U  
public void sort(int[] data) { HL8eD^  
int[] temp=new int[data.length]; JN[0L:  
mergeSort(data,temp,0,data.length-1); srmKaa|  
} PK:2xN:=  
-%m3-xZA  
private void mergeSort(int[] data,int[] temp,int l,int r){ OJ3UE(,I=  
int mid=(l+r)/2; ;l!`C':'  
if(l==r) return ; "wM1qX  
mergeSort(data,temp,l,mid); # c Fr   
mergeSort(data,temp,mid+1,r); n-afDV  
for(int i=l;i<=r;i++){ <z0WLw0'z  
temp=data; qL 5>o>J  
} 4JMiyiW&  
int i1=l; gH7z  
int i2=mid+1; !I8f#'p  
for(int cur=l;cur<=r;cur++){ H3O@9YU  
if(i1==mid+1) z2 hFn&  
data[cur]=temp[i2++]; %SA!p;  
else if(i2>r) O)#U ^  
data[cur]=temp[i1++]; yoS? s  
else if(temp[i1] data[cur]=temp[i1++]; Tls a%pn  
else wk $,k  
data[cur]=temp[i2++]; K+d2m9C=  
} ]<trA$ 0  
} JUt7En;XE  
x` /)g(  
} "(TkJbwC[  
;Yts\4BSM  
改进后的归并排序: M$S]}   
6mPm=I[oh  
package org.rut.util.algorithm.support; :T@r*7hNT  
NiSO'=y$n  
import org.rut.util.algorithm.SortUtil; Mr3-q  
=/9^, 6Q(  
/** @,OT/egF4:  
* @author treeroot LN^f1/ b*  
* @since 2006-2-2 1wn&js C  
* @version 1.0 [r-}bp'Gp  
*/ Q!'qC*Gyfn  
public class ImprovedMergeSort implements SortUtil.Sort { !xK=#pa  
E4oz|2!m  
private static final int THRESHOLD = 10; 0^l%j8/  
77,oPLSn  
/* 0kDBE3i#  
* (non-Javadoc) wWjG JvJ  
* #1/}3+=5B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H3KTir"on  
*/ "v]%3i.* -  
public void sort(int[] data) { h5~n 1qX  
int[] temp=new int[data.length]; vNDu9ovs-  
mergeSort(data,temp,0,data.length-1); c$H+g,7xQ-  
} Le#spvV3J|  
j,-C{ K  
private void mergeSort(int[] data, int[] temp, int l, int r) { 3YL l;TP_  
int i, j, k; K`6z&*  
int mid = (l + r) / 2; AHbZQulC  
if (l == r) _eQ-`?  
return; Jfhk@27T  
if ((mid - l) >= THRESHOLD) `'4)q}bB  
mergeSort(data, temp, l, mid); LJTo\^*  
else ?vtX"Fdz  
insertSort(data, l, mid - l + 1); jgu*Y{ocm  
if ((r - mid) > THRESHOLD) v;2CU  
mergeSort(data, temp, mid + 1, r); LBlN2)\@  
else /bVZ::A&_  
insertSort(data, mid + 1, r - mid); >,5i60Q  
n! h7   
for (i = l; i <= mid; i++) { X@wm1{!  
temp = data; +s[\g>i  
} /n5n )P@L  
for (j = 1; j <= r - mid; j++) { DVp5hR_$  
temp[r - j + 1] = data[j + mid]; ]N)DS+V/  
} @w9{5D4  
int a = temp[l]; \=2m7v#E  
int b = temp[r]; onei4c>@  
for (i = l, j = r, k = l; k <= r; k++) { 9U_ks[Qa  
if (a < b) { G=/k>@Di  
data[k] = temp[i++]; </~ 6f(mg  
a = temp; OM83S|1s  
} else { x~DLW1I  
data[k] = temp[j--]; =?Fkn4t  
b = temp[j]; ` }gbc69  
} :7.Me ;RA  
} S;\R!%t_  
} ^krk&rW3  
,[rPe\w.z  
/** jA(vTR.`  
* @param data k3Cz9Vt%  
* @param l b~Y%gC)FR  
* @param i h1D?=M\9  
*/ cu9Qwm  
private void insertSort(int[] data, int start, int len) { 7L(e h7  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); n> w`26MMp  
} &Z("D7.G  
} 9.OA, 6  
} P }7zE3V  
} y0bq;(~X~  
,_v|#g@{  
堆排序: " {de k  
Gpj* V|J  
package org.rut.util.algorithm.support; 1+kE!2b;b  
K`%tGVY  
import org.rut.util.algorithm.SortUtil; uXZg1 F)  
&m^@9E)S/  
/** (GK pA}~R  
* @author treeroot $9!D\N,}]C  
* @since 2006-2-2 XFwLz  
* @version 1.0   WY  
*/ f>9s!Hpu_  
public class HeapSort implements SortUtil.Sort{ sp9W?IJ 6c  
K|S:{9Q  
/* (non-Javadoc) @\P4/+"9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w|Cx>8P8@  
*/ <v 0*]NiX  
public void sort(int[] data) { `u'bRp  
MaxHeap h=new MaxHeap(); =Ufr^naA  
h.init(data); C|-pD  
for(int i=0;i h.remove(); u eb-2[=  
System.arraycopy(h.queue,1,data,0,data.length); .10y0F L4  
} L5fuM]G`  
PgM(l3x  
private static class MaxHeap{ n| !@1sd  
_Q(g(p&  
void init(int[] data){ `RRE(SiKU  
this.queue=new int[data.length+1]; E;Y;r"  
for(int i=0;i queue[++size]=data; }CGSEr4'w~  
fixUp(size); s0u{d qP  
} \Gp*x\<^Z  
} gN6rp(?y  
RD,5AShP  
private int size=0; <W)u{KS#TY  
X|LxV]  
private int[] queue; R,2P3lv1v@  
W-~n|PX8+  
public int get() { 25y6a|`  
return queue[1]; rNOES3[~  
} `YBkF  
# uCB)n&.  
public void remove() { ecJ6  
SortUtil.swap(queue,1,size--); vdDludEv  
fixDown(1); Y5q3T`x E  
} ./6<r OW  
file://fixdown F/d7q%I  
private void fixDown(int k) { u"xJjS  
int j; B@YyQ'  
while ((j = k << 1) <= size) { _6@hTen`  
if (j < size %26amp;%26amp; queue[j] j++; Y/ot3[  
if (queue[k]>queue[j]) file://不用交换 UYP9c}_,4  
break; UO Ug4  
SortUtil.swap(queue,j,k); zvc`3  
k = j; Os%n{_#8  
} (h-*_a}F4  
} D('2p8;2"7  
private void fixUp(int k) { /\s}uSW  
while (k > 1) { ,|?CU r9Y  
int j = k >> 1; oPKr* `'  
if (queue[j]>queue[k]) <bck~E  
break; tMx}*l|]  
SortUtil.swap(queue,j,k); L)QE`24  
k = j; #L}+H!Myh  
} (6p]ZY  
} ?']h%'Q  
rZPT89M6  
} 7IlOG~DC  
$4FX(O0Q@  
} $h[Q Q-  
ZSy?T  
SortUtil: >kZ57,  
 Qe"pW\  
package org.rut.util.algorithm; ,tH5e&=U01  
G.'+-v=\]  
import org.rut.util.algorithm.support.BubbleSort; IxR?'  
import org.rut.util.algorithm.support.HeapSort; hG~reVNf  
import org.rut.util.algorithm.support.ImprovedMergeSort; XZNY4/ 25G  
import org.rut.util.algorithm.support.ImprovedQuickSort; 5l-mW0,MK  
import org.rut.util.algorithm.support.InsertSort; vP@v.6gS,  
import org.rut.util.algorithm.support.MergeSort; ^>y@4qB  
import org.rut.util.algorithm.support.QuickSort; }U w&Ny  
import org.rut.util.algorithm.support.SelectionSort; SHb(O<6  
import org.rut.util.algorithm.support.ShellSort; $2D uB  
~9\WFF/  
/** ZPN roCK`  
* @author treeroot ow=UtA-^O  
* @since 2006-2-2 5m:i6,4  
* @version 1.0 ]{~NO{0@Y  
*/ 8;Fn7k_Uf  
public class SortUtil { `cQo0{xK  
public final static int INSERT = 1; s#Jh -+lM  
public final static int BUBBLE = 2; :4S%'d7  
public final static int SELECTION = 3; 7`IpBm<  
public final static int SHELL = 4; t&Os;x?To?  
public final static int QUICK = 5; \AUI|M;'  
public final static int IMPROVED_QUICK = 6; R2L;bGI*J  
public final static int MERGE = 7; 2jsw"aHW  
public final static int IMPROVED_MERGE = 8; Lj\/Ji_  
public final static int HEAP = 9; |sZ!  
S_T^G` [  
public static void sort(int[] data) { , B&fFis  
sort(data, IMPROVED_QUICK); depYqYK7G  
} R:JX<Ba  
private static String[] name={ GsbAlNP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" I-]>d;4.  
}; "TV(H+1,z  
GSoZx0  
private static Sort[] impl=new Sort[]{ E Uar/  
new InsertSort(), *tOG*hwdT  
new BubbleSort(), 7J28JK  
new SelectionSort(), C.^Ven  
new ShellSort(), "!>DX1rsi  
new QuickSort(), j#~Jxv%n  
new ImprovedQuickSort(), ``,k5!a66\  
new MergeSort(), ^[Ua46/"m  
new ImprovedMergeSort(), ._wkj  
new HeapSort() b96%")  
}; B{oU,3U>  
1Kvx1p   
public static String toString(int algorithm){ TvNY:m6.%  
return name[algorithm-1]; MC 0TaP  
} fl Jp4-nx  
cw&Hgjj2  
public static void sort(int[] data, int algorithm) { y~ G.V,0  
impl[algorithm-1].sort(data); ~'5  
} PN~@  
LAx4Xp/  
public static interface Sort { 3ZTE<zRQ  
public void sort(int[] data); [U#72+K  
} -IlJ^Al4  
"'^4*o9  
public static void swap(int[] data, int i, int j) { j` E +qk  
int temp = data; Hv]7e|  
data = data[j]; [ rNXQ` /  
data[j] = temp; Kx"<J@  
} NVIK>cT6  
} <?D[9Mk$  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
温馨提示:欢迎交流讨论,请勿纯表情、纯引用!
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八