Resolvido problemas do capitulo 5 até o 35

Author: LambdaDrive

Chapter 5/Problem5_31.py

@@ -0,0 +1,11 @@
+def subsetSum(numlist, target):
+    if len(numlist)< 3:
+        print("The list must have 3 or more numbers!")
+        return ''
+    for i in range(len(numlist)):
+        for a in range(len(numlist)-1, 0, -1):
+            for b in range(i+1, a):
+                if i < b and a > b:
+                    if numlist[i]+numlist[a]+numlist[b] == target:
+                        return True
+    return False

Chapter 5/Problem5_32.py

@@ -0,0 +1,8 @@
+def fib(n):
+    first = 0
+    second = 1
+    third = 1
+    for i in range(n):
+        third = first + second
+        first, second = second, third
+    return second

Chapter 5/Problem5_33.py

@@ -0,0 +1,6 @@
+def mystery(n):
+    numtimes = 0
+    while n > 1:
+        n = n // 2
+        numtimes += 1
+    return numtimes

Chapter 5/Problem5_34.py

@@ -0,0 +1,8 @@
+def statement(floatlist):
+    account = [0, 0]
+    for number in floatlist:
+        if number > 0:
+            account[0] += number
+        else:
+            account[1] += number
+    return account

Chapter 5/Problem5_35.py

@@ -0,0 +1,7 @@
+def pixels(twodlist):
+    pixels = 0
+    for i in range(len(twodlist)):
+        for a in range(len(twodlist[0])):
+            if twodlist[i][a] > 0:
+                pixels += 1
+    return pixels