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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Bigger is Greater
  5. Discussions

Bigger is Greater

  • randy_y_yuan
     + 3 comments
    for _ in range(int(input())):
    s = input()
    has_greater = False
    for i in range(len(s)-1)[::-1]:
        if ord(s[i]) < ord(s[i+1]):
            for j in range(i+1,len(s))[::-1]:
                if ord(s[i]) < ord(s[j]):
                    lis = list(s)
                    lis[i],lis[j]=lis[j],lis[i]
                    print("".join(lis[:i+1]+lis[i+1:][::-1]))
                    has_greater = True
                if has_greater == True:
                    break
        if has_greater == True:
            break
    if has_greater == False:
        print("no answer")

    thanks for posting this algorithm. here's a python 3 solution based on this algorithm