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[JAVA]用Java实现的各种排序

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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 tV  
插入排序: afaQb  
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package org.rut.util.algorithm.support; qKeR}&b  
MYxuQ|w  
import org.rut.util.algorithm.SortUtil; DuAix)#FN9  
/** pnuwj U-  
* @author treeroot d'Dd66  
* @since 2006-2-2 ,G?Kb#  
* @version 1.0 P A*U\  
*/ )FA:wsy~E  
public class InsertSort implements SortUtil.Sort{ 9P#kV@%(0c  
m4~~q[t  
/* (non-Javadoc) R;U4a2~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8In~qf  
*/ I3Z\]BI  
public void sort(int[] data) {  N`X|z  
int temp; |_s,]:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k $ SMQ6  
} .DnG}884  
}  cFjD*r-  
} (<Cg|*s  
(<H@W/0$  
} tK+JmbB\  
?hp,h3s;n$  
冒泡排序: M0vX9;J  
j g EYlZ  
package org.rut.util.algorithm.support; 8/P!i2o  
PbxQ \.  
import org.rut.util.algorithm.SortUtil; - ?  i  
<?;KF2A({  
/** PRyzvc~  
* @author treeroot VggSDb  
* @since 2006-2-2 g38 MF  
* @version 1.0 0;w 4WJJ  
*/ Y)GU{  
public class BubbleSort implements SortUtil.Sort{ . Wd0}?}  
L"T :#>  
/* (non-Javadoc) &(o&Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z)3oiLmD  
*/ |hDN$By  
public void sort(int[] data) { FKf2Q&2I  
int temp; x>4p6H{]0'  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 6RSit  
if(data[j] SortUtil.swap(data,j,j-1); ycIcM~<4  
} Hy'EbQ  
} w:1UwgcPC  
} JnQ@uZb`  
} \x\(36\u  
@,G\` ;Ma  
} LH@Kn?R6  
x A*6Z)Y  
选择排序: AS4oz:B  
CqX*.j{  
package org.rut.util.algorithm.support; x>J(3I5_b  
Cnu])R  
import org.rut.util.algorithm.SortUtil;  ,HNk<W  
"r@G V5ED  
/** Ak}`zIo  
* @author treeroot -\Z`+kY?p  
* @since 2006-2-2 Qo(<>d  
* @version 1.0 -Vmp6XY3q  
*/ ,x3< a}J  
public class SelectionSort implements SortUtil.Sort { VYH $em6  
:yw(Co]f  
/* -0k{O@l"  
* (non-Javadoc) 4zOFu/l6R  
* UQb|J9HY4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |@'K]$vZ*  
*/ \m<$qp,n  
public void sort(int[] data) { 9m"EY@-  
int temp; ! bwy/A  
for (int i = 0; i < data.length; i++) { Cf v1nU W  
int lowIndex = i; :[C|3KKe"  
for (int j = data.length - 1; j > i; j--) { s,|v,,<+  
if (data[j] < data[lowIndex]) { }4,[oD  
lowIndex = j; zSOZr2- ^a  
} SapVS*yx@  
} Cs vwc%  
SortUtil.swap(data,i,lowIndex); X7?14W  
} :pvVm>  
} cI@'Pr4:FJ  
[KW)z#`*  
} e?GzvM'2  
cw_B^f8^  
Shell排序: x%dVD  
eQfXUpk3@I  
package org.rut.util.algorithm.support; 3n_t^=  
,RAP_I!_x  
import org.rut.util.algorithm.SortUtil; a]8W32  
XHJ/211  
/** 6jov8GIAt  
* @author treeroot +mO/9m  
* @since 2006-2-2 M@pF[J/  
* @version 1.0 4jVd  
*/ 7PO]\X^(zE  
public class ShellSort implements SortUtil.Sort{ <c,iu{:  
6>'>BamX  
/* (non-Javadoc) bc& 5*?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0yb9R/3.  
*/ YEB7X>p#  
public void sort(int[] data) { VAdUd {  
for(int i=data.length/2;i>2;i/=2){ +5:9?&lH  
for(int j=0;j insertSort(data,j,i); wjKc!iB  
} ,OkI0[  
} GN+,9  
insertSort(data,0,1); iqWkhJphv  
} _Qb ].~  
J!QIMA4{  
/** vcP_gJz  
* @param data 0OtUb:8LX  
* @param j c'bh`H4  
* @param i R0GD9  
*/ Jg.^h1>x  
private void insertSort(int[] data, int start, int inc) { [XP\WG>s  
int temp; gU@R   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); !H9zd\wc  
} LZJFp@  
} DKNcp8<J  
} #)%X0%9.*<  
&5%~Qw..  
} +N|t:8qaf  
ciCQe]fS  
快速排序: FaaxfcIfkw  
=< P$mFP2*  
package org.rut.util.algorithm.support; 8xoC9!xt  
K8v@)  
import org.rut.util.algorithm.SortUtil; raR=k!3i  
7?uIl9Vk>(  
/** w:~vfdJ  
* @author treeroot :?)q"hE  
* @since 2006-2-2 H[?l)nZ}  
* @version 1.0 hu~XFRw15  
*/ 3_J({  
public class QuickSort implements SortUtil.Sort{ 8;3I:z&muQ  
:4Y 5  
/* (non-Javadoc) R{9G$b1Due  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^jk-GRD*  
*/ rFW,x_*_vP  
public void sort(int[] data) { Ma ]*Pled  
quickSort(data,0,data.length-1); FJsM3|{2=d  
} UQBc$`v  
private void quickSort(int[] data,int i,int j){ H 9?txNea  
int pivotIndex=(i+j)/2; Jg6@)<n  
file://swap ;"NW= P&  
SortUtil.swap(data,pivotIndex,j); i\ )$  
b,#?LdQ%  
int k=partition(data,i-1,j,data[j]); ~#=70  
SortUtil.swap(data,k,j); Ece=loV*l  
if((k-i)>1) quickSort(data,i,k-1); hz-^9U  
if((j-k)>1) quickSort(data,k+1,j); ;F /w&u.n  
}l5Q0'  
} ~yY5pnJ  
/** {w v{"*Q9Q  
* @param data UrdSo"%  
* @param i ERfSJ  
* @param j X9YbTN  
* @return ;jmT5XzL  
*/ P#,g5  
private int partition(int[] data, int l, int r,int pivot) { ca'c5*Fs  
do{ 2=n,{rkmj%  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); uA\KbA.c;U  
SortUtil.swap(data,l,r); h- %RSei5  
} ZP<OyX?  
while(l SortUtil.swap(data,l,r); V B=jK Mi  
return l; *nHkK!d<N  
} ~W_ T3@  
}Gd^r  
} rpL]5e!  
wqJ1^>TB  
改进后的快速排序: &M #}?@!C  
9#\oGzDN  
package org.rut.util.algorithm.support; +GNXV-S  
z+j3j2  
import org.rut.util.algorithm.SortUtil; %eJE@$  
#D%l;Ae  
/** 2-rfFqpe  
* @author treeroot Ol X otp8  
* @since 2006-2-2 TcH7!fUj  
* @version 1.0 t'HrI-x  
*/ Ka8Bed3  
public class ImprovedQuickSort implements SortUtil.Sort { ^{64b  
JzkI!5c<j  
private static int MAX_STACK_SIZE=4096; nO8e'&|  
private static int THRESHOLD=10; @[O|n)7  
/* (non-Javadoc) P2 z~U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `M ~-(,++  
*/ KK/siG~O  
public void sort(int[] data) { 2Jt*s$  
int[] stack=new int[MAX_STACK_SIZE]; X>eFGCz}I  
0G8zFe*p  
int top=-1; H|<Zm:.%$  
int pivot; Yo,n#<37  
int pivotIndex,l,r; h:r:qk  
f|{&Y2h(R  
stack[++top]=0; kp,$ NfD  
stack[++top]=data.length-1; b25C[C5C  
ynZfO2kf  
while(top>0){ W<Asr@  
int j=stack[top--]; +wm%`N;v<  
int i=stack[top--]; d-B,)$zE  
Z:>ek>Op  
pivotIndex=(i+j)/2; j$r2=~1  
pivot=data[pivotIndex]; &xS] ;Fr  
mz3Dt>  
SortUtil.swap(data,pivotIndex,j); =m?x5G^  
9*? i89T  
file://partition CD)JCv  
l=i-1; {br6*  
r=j; ~L9I@(/ S  
do{ le~p2l#e   
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); G g{M  
SortUtil.swap(data,l,r); OsgjSJrf  
} "E7YCZQR  
while(l SortUtil.swap(data,l,r); A 7zL\U4  
SortUtil.swap(data,l,j); nZ# 0L`@"Y  
1m<8M[6u  
if((l-i)>THRESHOLD){ J QA]O/|N  
stack[++top]=i; 'A'[N :i  
stack[++top]=l-1; ZP"Xn/L  
} qyR}|<F8*  
if((j-l)>THRESHOLD){ J|DY /v  
stack[++top]=l+1; _kUtj(re  
stack[++top]=j; t:tIzFNv  
} \T^ptj(0  
Z<[:v2  
} f SMy?8  
file://new InsertSort().sort(data); T!t9`I0Zz  
insertSort(data); dEPLkv  
} x+W,P  
/** &LHS<Nv^:  
* @param data /vw$3,*z  
*/ e9rgJJ  
private void insertSort(int[] data) { }k_'a^;C1  
int temp; !5>PZ{J  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); %G'P!xQhy  
} ?l^NKbw  
} .c\iKc#  
} __,F_9M  
!OMl-:KUzE  
}  x]~&4fp  
=v=u+nO  
归并排序: U,Z7n H3_  
p4z thdN[  
package org.rut.util.algorithm.support; Up\ k67  
+*x9$LSD  
import org.rut.util.algorithm.SortUtil; m[Cp G=32B  
# 2?3B  
/** \ 9#X]H  
* @author treeroot gh.+}8="  
* @since 2006-2-2 [s~6,wz  
* @version 1.0 NPLJ*uHH  
*/ TECp!`)j"  
public class MergeSort implements SortUtil.Sort{ |eP5iy wg  
FR6 PY  
/* (non-Javadoc) @J<RFgw#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) &L r~x#Wx  
*/ b$>1_wTL  
public void sort(int[] data) { Lm'+z97  
int[] temp=new int[data.length]; oh,29Gg  
mergeSort(data,temp,0,data.length-1); =s,}@iqNO4  
} ? w@)3Z=u  
9~4@AGL  
private void mergeSort(int[] data,int[] temp,int l,int r){ QNGp+xUHJ9  
int mid=(l+r)/2; kp^q}iS  
if(l==r) return ; 7 /XfPF  
mergeSort(data,temp,l,mid); &M6Zsmo  
mergeSort(data,temp,mid+1,r); u4DrZ-v  
for(int i=l;i<=r;i++){ R^@   
temp=data; ?$ M:4mX  
} H}g p`YW:4  
int i1=l; <AU0ir  
int i2=mid+1; b8|<O:]Hp  
for(int cur=l;cur<=r;cur++){ YhL^kM@c  
if(i1==mid+1) /?u]Fj  
data[cur]=temp[i2++]; -{NP3zy  
else if(i2>r) <l<6W-I   
data[cur]=temp[i1++]; yBfX4aH:`  
else if(temp[i1] data[cur]=temp[i1++]; $ U-#woXa  
else 5'n$aFqI  
data[cur]=temp[i2++]; VI?kbq jo  
} 4X5KrecNr  
} nRs:^Q~o  
M[ ON2P;  
} ^SW0+O  
B{>x  
改进后的归并排序: 4++pK;I  
=-/sB>-C  
package org.rut.util.algorithm.support; ;3+_aoY  
@x_0AkZU  
import org.rut.util.algorithm.SortUtil; gpogv -  
DSK?7F$_oE  
/** 3(_:"?xA  
* @author treeroot ,6SzW+L7  
* @since 2006-2-2 Ht|"91ZC5  
* @version 1.0 :}-izd)/j  
*/  C~T*Wlk  
public class ImprovedMergeSort implements SortUtil.Sort { ff 6x4t  
3)hQT-)  
private static final int THRESHOLD = 10; 3 5/ s\  
4mnVXKt%.  
/* ^;wz+u4^l  
* (non-Javadoc) 1wBmDEhS  
* ym'!f|9AA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wjr^: d  
*/ !1Nh`FN  
public void sort(int[] data) { r(JP& @  
int[] temp=new int[data.length]; '~zi~Q7M  
mergeSort(data,temp,0,data.length-1); q2*1Gn9!j  
} $J#Z`%B^y  
-?NAA]P5c@  
private void mergeSort(int[] data, int[] temp, int l, int r) { =ba1::18  
int i, j, k; 5-UrHbpCZ#  
int mid = (l + r) / 2; kc<5wY_t  
if (l == r) lLLPvW[Q  
return; WG +]  
if ((mid - l) >= THRESHOLD) ~bz$]o-<  
mergeSort(data, temp, l, mid); #x \YA#~  
else 2x~Pq_?y  
insertSort(data, l, mid - l + 1); M,<UnAVP-  
if ((r - mid) > THRESHOLD) aI 1tG  
mergeSort(data, temp, mid + 1, r); FmgMd)#  
else Tt4Q|"CJA  
insertSort(data, mid + 1, r - mid); $3*y)Ny^  
+3Z+#nGtk  
for (i = l; i <= mid; i++) { +%Z:k  
temp = data; iqKs:v@+x  
} (,b\"Q  
for (j = 1; j <= r - mid; j++) { p!K^Q3kO  
temp[r - j + 1] = data[j + mid]; B_>r|^Vh  
} `W.g1"o8W4  
int a = temp[l]; QWE\Ud.q  
int b = temp[r]; p$cb&NNh*H  
for (i = l, j = r, k = l; k <= r; k++) { QwL*A `@  
if (a < b) { tTT :r),}$  
data[k] = temp[i++]; e@iz`~[  
a = temp; V>c !V9w   
} else { J+}z*/)|#  
data[k] = temp[j--]; oWEzzMRz  
b = temp[j]; m]c1DvQb  
} ()5X<=i  
} H~bbkql  
} H3( @Q^9  
&joP-!"  
/** k]~$AaNq  
* @param data Hz%<V *\{  
* @param l r 5t{I2  
* @param i 4 RfBXVS  
*/ = BbG2k  
private void insertSort(int[] data, int start, int len) { >ByqM{?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); aLlHR_  
} z<gII~%  
} TeFi[1  
} 4gZ)9ya   
} \["I.gQ  
Wl }J=  
堆排序: 0[ (kFe  
D[)_ f  
package org.rut.util.algorithm.support; KNR7Igw?}  
M*D@zb0ia  
import org.rut.util.algorithm.SortUtil; 15OzO.Ud  
<C451+95  
/** PcjeuJZ  
* @author treeroot 9 9^7Ek!z#  
* @since 2006-2-2 O%w'n z"  
* @version 1.0 3#y`6e=5  
*/ [z!pm-Ir  
public class HeapSort implements SortUtil.Sort{ =Aw`0  
1DGl[k/zv  
/* (non-Javadoc) Z[>fFg~N4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4p%^?L?  
*/ ')/w+|F  
public void sort(int[] data) { 6OqF-nso[E  
MaxHeap h=new MaxHeap(); umCmxm r&  
h.init(data); .[Qi4jm>`  
for(int i=0;i h.remove(); \fp'=&tp~a  
System.arraycopy(h.queue,1,data,0,data.length);  cp0yr:~  
} A4Q{(z-?  
5rmQ:8_5  
private static class MaxHeap{ KtArV  
HZ1nuA  
void init(int[] data){ MhJA8| B6|  
this.queue=new int[data.length+1]; =woP~+  
for(int i=0;i queue[++size]=data; .`(YCn?\  
fixUp(size); 5K-,k^T}  
} *Uy;P>8  
} WD! " $  
f4&;l|R0a  
private int size=0; yYSoJqj Q  
DQ9aq.;  
private int[] queue; ^%tn$4@@Z.  
%e)? Mem  
public int get() { 5\h6'  
return queue[1]; yXqC  
} T#i~/  
<":83RCS  
public void remove() { .gt;:8fw{  
SortUtil.swap(queue,1,size--); <j/wK]d*/  
fixDown(1); q=-h#IF^  
} DiGHo~f  
file://fixdown T3LVn<Lm\  
private void fixDown(int k) { *`LrvE@t  
int j; JSmg6l?[u  
while ((j = k << 1) <= size) { Ql9>i;AGV  
if (j < size %26amp;%26amp; queue[j] j++; 1_l)$"  
if (queue[k]>queue[j]) file://不用交换 +KWO`WR  
break; C6h[L  
SortUtil.swap(queue,j,k); :qzh kKu  
k = j; mn*}U R  
} PZO.$'L|7  
} %oWG"u  
private void fixUp(int k) { y&bZai8WlE  
while (k > 1) { pred{HEye  
int j = k >> 1; ydj*Jy'  
if (queue[j]>queue[k]) g^7zDU&'  
break; DtJ3`Jd  
SortUtil.swap(queue,j,k); U#Iwe=  
k = j; ov daK"q2  
} )1gT&sU0  
} k8@bQ"#b  
xxr'g =  
} 06Q9X!xD  
s^4wn:*$zd  
} `^ a:1^  
teC/Uf 5  
SortUtil: fEiNHVx  
] w0Y5H "  
package org.rut.util.algorithm; {47Uu%XT  
Y3s8@0b3  
import org.rut.util.algorithm.support.BubbleSort; mAET`B "  
import org.rut.util.algorithm.support.HeapSort; mN.  
import org.rut.util.algorithm.support.ImprovedMergeSort; S)W?W}*R\  
import org.rut.util.algorithm.support.ImprovedQuickSort; ecO$L<9>  
import org.rut.util.algorithm.support.InsertSort; ;PnN$g]Q  
import org.rut.util.algorithm.support.MergeSort; hwQ|'^(@O  
import org.rut.util.algorithm.support.QuickSort; ]6s/y  
import org.rut.util.algorithm.support.SelectionSort; :SWrx MT  
import org.rut.util.algorithm.support.ShellSort; /-t!)_zvw  
l*huKSX}  
/** eVB43]g  
* @author treeroot }2:q#}"  
* @since 2006-2-2 \I^"^'CP  
* @version 1.0 y7+n*|H  
*/ D:?"Rf{)  
public class SortUtil { !%DE(E*'(  
public final static int INSERT = 1; !&3"($-U3G  
public final static int BUBBLE = 2; /q,=!&f2  
public final static int SELECTION = 3; H8B2{]HAt  
public final static int SHELL = 4; ;uv$>F auk  
public final static int QUICK = 5; r!w*y3  
public final static int IMPROVED_QUICK = 6; % tC[q   
public final static int MERGE = 7; 3gD <!WI  
public final static int IMPROVED_MERGE = 8; 2X*n93AQi  
public final static int HEAP = 9; b?VByJl  
7/_|/4&  
public static void sort(int[] data) { P}(c0/  
sort(data, IMPROVED_QUICK); a=x &sz\x  
} bj0<A  
private static String[] name={ Ciz,1IV  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ShvC4Xb 0  
}; o|c&$)m  
5wE6gRJ  
private static Sort[] impl=new Sort[]{ jC$~m#F  
new InsertSort(), O '`|(L  
new BubbleSort(), %++S;#)~  
new SelectionSort(), Da!vGr  
new ShellSort(), q8.Z7ux  
new QuickSort(), gg8)oc+w  
new ImprovedQuickSort(), y4aT-^C'  
new MergeSort(), %e)vl[:}  
new ImprovedMergeSort(), Y,EF'Ot  
new HeapSort() ;]=@;? 9  
}; JUXBMYFus  
!0|&f>y  
public static String toString(int algorithm){ L<XX?I\p  
return name[algorithm-1]; [+#k+*1*o  
} r'_#rl  
z4` :n.  
public static void sort(int[] data, int algorithm) { u$aN~6HG  
impl[algorithm-1].sort(data); SG&H^V8  
} f)gV2f0t  
Eza^Tbq%j?  
public static interface Sort { AE`UnlUSF  
public void sort(int[] data); n "^rS}Y]  
} 1vCp<D9<  
0(9gTxdB  
public static void swap(int[] data, int i, int j) { Xc^(e?L4  
int temp = data; m^0 I3;  
data = data[j]; S4_ZG>\VT  
data[j] = temp; + 65<|0  
} zV;NRf) 9.  
} nD)SR  
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