Added Interpolation Search in Python

Author: hotshot07

Search/InterpolationSearch/InterpolationSearch.py

@@ -0,0 +1,127 @@
+#Interpolation Search
+#Better than binary search as it returns a closer value of pos on each iteration.
+#pos=low +[x-arr[low]*(high-low)/arr[high]-arr[low]]
+
+#iterative implememtation of interpolation search
+
+def interpolationSearch(L,e):
+
+	low=0
+	high=len(L)-1
+
+	while low<=high and e >=L[low] and e <=L[high]:
+		pos=low + int((high-low)/(L[high]-L[low])*(e-L[low]))
+
+		print(pos)
+
+		if L[pos]==e:
+			return pos
+
+		if L[pos]<e:
+			low=pos+1
+
+		if L[pos]>e:
+			high=pos-1
+
+
+	return -1
+
+
+L = [123,
+134,
+149,
+169,
+210,
+219,
+229,
+234,
+239,
+245,
+257,
+275,
+277,
+281,
+286,
+295,
+304,
+315,
+331,
+334,
+338,
+349,
+352,
+366,
+385,
+391,
+392,
+401,
+413,
+436,
+442,
+453,
+480,
+499,
+501,
+505,
+509,
+511,
+516,
+521,
+527,
+536,
+560,
+562,
+568,
+589,
+601,
+636,
+648,
+649,
+659,
+660,
+666,
+678,
+689,
+700,
+733,
+739,
+754,
+755,
+776,
+798,
+808,
+809,
+818,
+828,
+834,
+842,
+846,
+856,
+857,
+858,
+859,
+869,
+889,
+891,
+893,
+895,
+900,
+918,
+930,
+934,
+949,
+953,
+963,
+979,
+980,
+989,
+991,
+]
+  
+e = 8931# Element to be searched 
+index = interpolationSearch(L,e) 
+  
+if index != -1: 
+    print("Element found at index",index) 
+else: 
+    print("Element not found")