在本文中,給定的任務是找到字串的總重量。為了計算字串權重,我們將給定的字串轉換為較低的形式。考慮到字元的重量,我們取 a=1、b=,2 等等,直到 z=26。在這篇 Python 文章中,使用兩個不同的範例,給出了尋找給定字串的權重的方法。在第一個範例中,字串中的給定字元為 fetc、hed,然後將它們各自的權重加入更新後的權重。在範例2中,首先計算給定字元在字串中出現的頻率,然後將該頻率乘以對應的字元權重,然後將所有這些分量權重加在一起得到最終結果。
步驟 1 - 首先使 atoz = ' abcdefghijklmnopqrstuvwxyz'。
步驟 2 - 我們將使用 atoz.index() 函數來取得權重數字,例如,此處空格 ' ' 將具有 0 值,b 將具有 2 值,依此類推。
步驟 3 - 現在指定要計算字串權重的給定字串。
第 4 步 - 迭代給定的字串以逐一取得字元。
第5步 - 找出atoz中角色的位置值(權重值)。
第 6 步 - 透過新增字元的權重值來更新字串權重。
第7步 - 最後,列印總結果。
givenstr = 'this is a sample string' def calculateWeight(teststr): teststr = teststr.lower() atoz = ' abcdefghijklmnopqrstuvwxyz' weight = 0 for item in range(len(teststr)): elem = teststr[item] currweight = atoz.index(elem) weight += currweight print("This albhabet:",elem, ", alphabet weight:", currweight, ", Updated String Weight ", weight) return weight finalresult= calculateWeight(givenstr) print("Final String Weight: ",finalresult)
This albhabet: t , alphabet weight: 20 , Updated String Weight 20 This albhabet: h , alphabet weight: 8 , Updated String Weight 28 This albhabet: i , alphabet weight: 9 , Updated String Weight 37 This albhabet: s , alphabet weight: 19 , Updated String Weight 56 This albhabet: , alphabet weight: 0 , Updated String Weight 56 This albhabet: i , alphabet weight: 9 , Updated String Weight 65 This albhabet: s , alphabet weight: 19 , Updated String Weight 84 This albhabet: , alphabet weight: 0 , Updated String Weight 84 This albhabet: a , alphabet weight: 1 , Updated String Weight 85 This albhabet: , alphabet weight: 0 , Updated String Weight 85 This albhabet: s , alphabet weight: 19 , Updated String Weight 104 This albhabet: a , alphabet weight: 1 , Updated String Weight 105 This albhabet: m , alphabet weight: 13 , Updated String Weight 118 This albhabet: p , alphabet weight: 16 , Updated String Weight 134 This albhabet: l , alphabet weight: 12 , Updated String Weight 146 This albhabet: e , alphabet weight: 5 , Updated String Weight 151 This albhabet: , alphabet weight: 0 , Updated String Weight 151 This albhabet: s , alphabet weight: 19 , Updated String Weight 170 This albhabet: t , alphabet weight: 20 , Updated String Weight 190 This albhabet: r , alphabet weight: 18 , Updated String Weight 208 This albhabet: i , alphabet weight: 9 , Updated String Weight 217 This albhabet: n , alphabet weight: 14 , Updated String Weight 231 This albhabet: g , alphabet weight: 7 , Updated String Weight 238 Final String Weight: 238
第1 步 - 首先建立一個名為charweight= {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5的字典,「f」:6,「g」:7,………。最多「z」:26}
步驟 2 - 現在指定要計算字串權重的給定字串。
第 3 步 - 尋找給定字串中字元的出現頻率。
第 4 步 - 迭代字元權重字典並找到給定字串中每個字元的權重值。
第 5 步 - 將字元出現的頻率與其權重相乘。
第 6 步 - 透過新增此計算值來更新字串權重。
第 7 步 - 重複此操作並在最後列印總結果。
給定公式中使用的術語的說明
TotalWeight 是給定測試字串的總重量。
N1,n2表示給定測試字串中出現的字元
Occr(n1) 表示在給定的測試字串中出現 n1。
Weight(n1) 表示給定字元 n1 在 charweight 字典中的字元權重。
這裡‘*’被用來當作數字的乘法運算子
這裡‘ ’被用來當作數字的加法運算子
TotalWeight= (Occr(n1) * 權重(n1)) (Occr(n2) * 權重(n2)) …..依此類推
givenstr = 'this is a sample string' charweight= {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6, 'g': 7, 'h': 8, 'i': 9, 'j': 10, 'k': 11, 'l': 12, 'm': 13, 'n': 14, 'o': 15, 'p': 16, 'q': 17, 'r': 18, 's': 19, 't': 20, 'u': 21, 'v': 22, 'w': 23, 'x': 24, 'y': 25, 'z': 26} WeightSum=0 occurFreq = {} for i in givenstr: if i in occurFreq: occurFreq[i] += 1 else: occurFreq[i] = 1 print("Char Weights: " , charweight) print("Occurance: ", occurFreq) for alphabetChar, alphabetCharCount in occurFreq.items(): print(alphabetChar, ":", alphabetCharCount) for key in charweight.keys(): if key.find(alphabetChar) > -1: #print(charweight[key]*alphabetCharCount) WeightSum=WeightSum + charweight[key]*alphabetCharCount #print(WeightSum) print("This albhabet:",alphabetChar, ", alphabet Count:", alphabetCharCount, ", alphabet Weight:", charweight[key], " Updated String Weight ", WeightSum) print("Final String Weight: ", WeightSum)
Char Weights: {'a': 1, 'b': 2, 'c': 3, 'd': 4, 'e': 5, 'f': 6, 'g': 7, 'h': 8, 'i': 9, 'j': 10, 'k': 11, 'l': 12, 'm': 13, 'n': 14, 'o': 15, 'p': 16, 'q': 17, 'r': 18, 's': 19, 't': 20, 'u': 21, 'v': 22, 'w': 23, 'x': 24, 'y': 25, 'z': 26} Occurance: {'t': 2, 'h': 1, 'i': 3, 's': 4, ' ': 4, 'a': 2, 'm': 1, 'p': 1, 'l': 1, 'e': 1, 'r': 1, 'n': 1, 'g': 1} t : 2 This albhabet: t , alphabet Count: 2 , alphabet Weight: 20 Updated String Weight 40 h : 1 This albhabet: h , alphabet Count: 1 , alphabet Weight: 8 Updated String Weight 48 i : 3 This albhabet: i , alphabet Count: 3 , alphabet Weight: 9 Updated String Weight 75 s : 4 This albhabet: s , alphabet Count: 4 , alphabet Weight: 19 Updated String Weight 151 : 4 a : 2 This albhabet: a , alphabet Count: 2 , alphabet Weight: 1 Updated String Weight 153 m : 1 This albhabet: m , alphabet Count: 1 , alphabet Weight: 13 Updated String Weight 166 p : 1 This albhabet: p , alphabet Count: 1 , alphabet Weight: 16 Updated String Weight 182 l : 1 This albhabet: l , alphabet Count: 1 , alphabet Weight: 12 Updated String Weight 194 e : 1 This albhabet: e , alphabet Count: 1 , alphabet Weight: 5 Updated String Weight 199 r : 1 This albhabet: r , alphabet Count: 1 , alphabet Weight: 18 Updated String Weight 217 n : 1 This albhabet: n , alphabet Count: 1 , alphabet Weight: 14 Updated String Weight 231 g : 1 This albhabet: g , alphabet Count: 1 , alphabet Weight: 7 Updated String Weight 238 Final String Weight: 238
我們在這裡給出兩種不同的方法來展示如何找到給定字串的字串權重。首先,從給定的測試字串中一一取出所使用的字符,然後將它們各自的權重相加。透過重複此過程,計算出最終的字串重量。在範例 2 中,首先找到字串中的字元頻率,然後將該頻率乘以該字元的權重。對給定字串中使用的所有字元重複此過程,然後計算最終的字串權重。
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