Python 程序:一次遍历将空格移到字符串最前
给定一个包含一组单词和空格的字符串,我们的任务是遍历一次字符串,将所有空格移到字符串最前面。我们使用列表推导在 Python 中快速解决这个问题。
示例
Input: string = "python program" Output: string= “ pythonprogram"
算法
Step1: input a string with word and space. Step2: Traverse the input string and using list comprehension create a string without any space. Step 3: Then calculate a number of spaces. Step 4: Next create a final string with spaces. Step 5: Then concatenate string having no spaces. Step 6: Display string.
示例代码
# Function to move spaces to front of string # in single traversal in Python def frontstringmove(str): noSp = [i for i in str if i!=' '] space= len(str) - len(noSp) result = ' '*space result = '"'+result + ''.join(noSp)+'" print ("Final Result ::>",result) # Driver program if __name__ == "__main__": str = input("Enter String") frontstringmove(str)
输出
Enter String python program Final Result ::>" pythonprogram"
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